11 th International Conference

HIGH MAGNETIC FIELDS

IN THE

PHYSICS OF SEMICONDUCTORS

August 8-12, 1994Francis Bitter National Magnet LaboratoryMassachusetts Institute of Technology

Editor

DONALD HEIMAN

Francis Bitter National Magnet LaboratoryMassachusetts Institute of Technology

Cambridge, Massachusetts, USA

UNIVERSlT/TCDfBLIOTHEKHANNCVER

(JNFORMAT)ONSBIDLIOTr-IH' ,World Scientific —----—- J

CONTENTS

Preface v

Committees vii

List of Sections

I. COMPOSITE FERMIONS

A. Experiment 1

B. Theory 50

II. COUPLED LAYERS 78

III. EDGE EFFECTS

A. Experiment 114

B. Theory 150

IV. LOCALIZATION

A. Metal/Insulator Transition 188

B. Coulomb Gap 224

C. Scaling 236

V. QUANTUM HALL EFFECTS 272

VI. MAGNETO-OPTICSA. Quantum Hall Regime 300

B. Visible and Near-visible Region 324

C. Infrared Region 366

I). D" and X" 394

VII. ELECTRON SOLID 416

VIII. NANOSTRUCTURES

A. Quuntum dots 456

B. Quantum wires 496

IX. TUNNELING 544

X. DELTA-DOPED LAYERS 588

XL Si-Oe 612

XII. MAGNETIC SEMICONDUCTORS 638

XIII. 3D SYSTEMS 686

XIV. ORGANIC CONDUCTORS 714

XV. EXPERIMENTAL METHODS 750

Author Index 759

ix

List of Papers

I. COMPOSITE FERMIONS

A. Experiment

1. Geometrical Resonance of Composite Fermions in Anti-Dot Superlattice 1

W. KANG, H.L. STORMER, L.N. PFEIFFER, K.W. BALDWIN &

K.W. WEST (AT&T Bell Labs)

2. Experimental Demonstration of a Fermi Surface at One-Half Filling Factor 8

R.L. WILLETT (AT&T Bell Labs)

1. Shubnikov-de Haas Mass and Dingle Temperature of Composite Fermions 16

R.R. DU, A.S. YEH, H.L. STORMER, D.C. TSUI, L.N. PFEIFFER &

K.W. WEST (Princeton University)

4. The Quantum Hall Effect ofComposite Fermions 20

D.R. LEADLEY, R.J. NICHOLAS, P.J. GEE, J. SINGLETON,

J.J. HARRIS & C.T. FOXON (University Oxford)

5. Hole-flux Composite Particles Around the Half-Filled Landau Level 24

H.C. MANOHARAN, M. SHAYEGAN & S.J. KLEPPER (Princeton University)

6. Temperature and Current Dependent Magnetotransportin Low Magnetic Fields and Around Filling Factor One Half 28

E. CHOW, R.G. CLARK, Y. LI, H.P. WEI, C.T. FOXON &

JJ. HARRIS (Indiana University)

7. A Study of the Hierarchy of the FQHE by Time-resolved Luminescence

or Composite Fermion Effective Mass from Luminescence Measurements 30

I.V. KUKUSHKIN, R.J. I1AUG, K. VON KLITZING, K. PLOOG &

K. EBERL(Max-Planck-Inslitut, Stuttgart)

8. Radiative Recombination from Composite Fermions 34

A.J. TURBERFIELD, I.N. HARRIS, H.D.M. DAVIES, J.F. RYAN,

C.T. FOXON & J.J. HARRIS (University Oxford)

9. The Quantum-limit Thermopower in 2D Electron Systems 38

11. ZEITLER, B. TIEKE, S.J.A. WIEGERS, J.C. MAAN, R. FLETCHER,

V.l. FAL'KO, C.T. FOXON & J.J. HARRIS (Nijmegen High Field Magnet Lab)

10. Thermopower of a Dilute 2D Hole System at Half-filled Landau Levels 46

and in the Reentrant Insulating Phase

X. YING, V. BAYOT, M.B. SANTOS & M. SHAYEGAN (Princeton University)

xt

XII

B. Theory

1. Composite Fermions 50J.K. JAIN (SUNY, Stony Brook)

2. Composite-Fermion Analysis of the Ferromagnetic Spin Wavein the Fractional Quantum Hall System 58

H. AOKI & T. NAKAJIMA (ISSP Tokyo)

3. Sharp and Smooth Boundaries and Edge States of Composite Fermion Systems 62L. BREY (Univerity Autonoma de Madrid)

4. The Structure of Fractional Edge States: A Composite Fermion Approach 66

D.B. CHKLOVSKH (MIT)

5. Electromagnetic Response of the Fractional Quantized Hall State 70S.H. SIMON, B.I. HALPERIN& S. HE (Harvard University)

6. Charge Density of Fractional Charged Quasiparticlesin die Composite Fermion Picture 74

X.M. CHEN, X. XIA & J.J. QUINN (University Tennessee)

XIII

II. COUPLED LAYERS

1. New Physics in Double-layer 2D Electron Systems 78

J.P. EISENSTEIN (AT&T Bell Labs)

2. Spontaneous Interlayer Coherence in Double-layer Quantum Hall Systems 86

K. MOON, H. MORI, K. YANG, S.M. GIRVIN, A.H. MACDONALD,

L. ZHENG, D. YOSHJOKA& S. C. ZHANG {Indiana University)

3. The Unquantized Quantum Hall Effect in Coulomb Drag 94

E. SHIMSHONI& S. SONDHI (University Dlinois)

4. Correlated Quantum Hall Effect in Bilayer Electron Systems 98

T.S. LAY, Y.W. SUEN, H.C. MANOHARAN, X. YING, M.B. SANTOS &

M. SHAYEGAN (Princeton University)

5. Longitudinal Magnetoresistance of Superlattices 102

B. LAIKHTMAN & D. MENASHE (Hebrew University)

6. Magnetic-field-induced Minigap in Double Quantum Wells 106

J.A. SIMMONS, N.E. HARFF, S.K, LYO & J.F. KLEM

(Sandia National Labs)

7. Magnetotransport and Electric Subband Studies ofIn0 52A10 4gAs /InxGaj.xAsAsymmetric Coupled Quantum Wells 110

T.W. KIM, M. JUNG, T.H. PARK, J.W. CHO, K. YOO, K.-H. YOO,

G. IHM & S.J. LEE (Kwangwoon University)

III. EDGE STATES

A. Experiment

1. The Breakdown ofthe Quantum Hall Effect as a Probe of Current Distribution 114

U. MEIRAV, N.Q. BALABAN & H. SHTRIKMAN (Weizmann Institute)

2. Electro-optic Imaging of Electric Fields in Two-dimensional Electron Systems 122

R. KNOTT, W. DIETSCHE, K. VON KLITZING, K. EBERL &

K. PLOOG (Max-Planck-Institut, Stuttgart)

3. Magnetic Field Symmetry Properties of the Capacitance Tensor

of a Two-dimensional Electron System 130

W. CHEN, T.P. SMITH III, M. BUTTIKER& M. SHAYEGAN

(IBM Watson)

4. Phonon Emission from the Contact Regions of a Magnetically QuantizedTwo-Dimensional Electron Gas 138

Z. XIN, F.F. OUALI, LJ. CHALLIS, A.F. JEZEERSKI & M. HENINI

(University of Nottingham)

5. Evaluation ofEdge Channel Width through Temperature Dependent

Capacitance Minima in Quantum Hall Regime 142

K. OTO, S. TAKAOKA, H. KURIMOTO & K. MURASE (Osaka University)

6. Dual Ordinary- and Quantum-Hall Effects 146

R.G. MANI, K. VON KLITZING & K. PLOOG (MaxPlanck Institut, Stuttgart)

XV

B. Theory

1. Bulk versus Edge States in Quantum Hall Regime 150

T.ANDO(ISSP Tokyo)

2. The Effect of Magnetic Field on the Edge Plasmons

of Two-dimensional Electron Gas Systems 160X. XIA, X.M. CHEN & J.J. QUINN (University Tennessee)

3. Two-channel Resonant Tunneling between Edge States

in a Quantum Hall Sample 164

M.E. RAIKH & T.V. SHAHBAZYAN (University Utah)

4. Magnetic Domains in Spin-polarized Edge Channels 168

L. RUKELS & G.E.W. BAUER (Delft University Technology)

5. The Influence of Exchange on Edge States

in the Integer Quantum Hall EffectRegime 172

T.H. STOOF & G.E.W. BAUER (Delft University Technology)

6. Electrostatics ofInter-Landau-level Diodes 176

A.V. KHAETSKJI, V.I. FAL'KO & G.E.W. BAUER (Delft University Tech)

7. Current-induced Potential and Charge Distribution

in aTwo-dimensional Electron System in a Magnetic Field 180

H. NIELSEN (Niels Bohr Institute)

8. The Nonlocal Breakdown of the Quantum Hall Effect 184

M.V. BUDANTSEV, G.M. GUSEV, Z.D. KVON & A.G. POGOSOV

(Russian Acad Sciences, Siberia)

XVI

IV. LOCALIZATION

A. Metal/Insulator Transition

1. Transition from Quantum Hall Metal to Insulator

Induced by Floating-up of Extended-State Bands in Si-MOSFETs 188

T. OKAMOTO, Y. SHINOHARA, S. KAWAJI & A. YAGI

(Gakushuin University)

2. Transformation of the QUE into the Quantum Oscillations

of the 2D Metal to Insulator Critical Boundary 192V.M. PUDALOV & M. D'lORIO (National Research Council Canada)

3. Magnetic-field-induced Metal-insulator-transition

in GaAs/AlGaAs Quantum Wells and Superlattices 196

W. HILBER, M. HELM, W. HAUKE, F.M. PEETERS, K. ALAVI &

R.N. PATHAK (University Linz)

4. Temperature-driven Transitions from Insulating Behavior at v=l 200W. MASON, S.V. KRAVCHENKO, J.E. FURNEAUX, J.M. CAULFJELD,J. SINGLETON & V.M. PUDALOV (University Oklahoma)

5. Hall Insulator in Silicon Inversion Layers in the High-field Extreme Quantum Limit 204

S.V. KRAVCHENKO, J.E. FURNEAUX & V.M. PUDALOV

(University Oklahoma)

6. Magnetotransport in Semimetallic and SemiconductingInAs/Ga[.xInxSb Heterostructures 208

K.S.H. DALTON, D.M. SYMONS, M. VAN DER BURGT, M. LAKRIMI,R.J. NICHOLAS, N.J. MASON& P.J. WALKER (University Oxford)

7. Localization and an Increase of the Efficiency of Impact Ionization

in Semi-insulating GaAs near the Ultra-quantum Limit Regime 212J. LUSAKOWSKI, S. HUANT & M. GRYNBERG (University Warsaw)

8. Electric-Field-Dependent Particle Dynamics and Conditions

for the Integer Quantum Hall Effect 216J. REISS (CNRS, CRTBT)

9. Electronic Properties of Type-H PbTe/PbS Superlattices 220

F.F. SIZOV, J.V. GUMENJUK-SICHEVSKAYA, V.V. TETYORKIN &

V.V. ZABUDSKY (Institute Semiconductor Physics, Ukraine)

XVII

B. Coulomb Gap

1. Coulomb Gap in Two-dimensional Electron System in a Strong Magnetic Field 224A.L. EFROS & F.G. PIKUS (University Utah)

2. Screening of the Coulomb Gap in Two-dimensional Variable-range Hopping 228X.L. HU, Y. CARMI, A.J. DAHM & H.W. JIANG

(Case Western Reserve University)

3. Interactions and Disorder in the Integer Quantum Hall Effect 232S.R.E. YANG (NRC Canada)

C. Scaling

1. Microwave Frequency Scaling in die Integer Quantum Hall Effect 236L.W. ENGEL, D. SHAHAR, C. KURDAK & D.C. TSUI

(Princeton University)

2. Universality and Corrections to Scaling in the Integer Quantum Hall Effect 244B. HUCKESTEIN (Max-Planck, Heidelberg)

3. Localization in aSpin-degenerate Landau Level in the Semiclassical Limit 248

D.K.K. LEE & J.T. CHALKER (MIT)

4. Temperature Dependence of Quantum Hall Plateaux Width

for Low- and High-mobility Heterojunctions 252

P.J. GEE, D.R. LEADLEY, S.O. HILL, J. SINGLETON, R.J. NICHOLAS,J.J. HARRIS & C.T. FOXON (University Oxford)

5. Microwave Conductivity of the IQHE-to-Hall Insulator Transition 256

D. SHAHAR,L.W. ENGEL & D.C. TSUI (Princeton University)

6. Electronic States and Level Statistics in 2D Electrons in Strong Magnetic Fields 260

Y. ONO (Toho University)

7. Resonant Scattering by Impurities and Universal Localization Scalingin the Integer QHE 268

S.A. GURVITZ (Weizmann Institute)

XVIII

V. QUANTUM HALL EFFECTS

1. Universal Prefactor of the Activated Conductivity in the Quantum Hall Effect 272

D.G. POLYAKOV & B.I. SHKLOVSKH (University Minnesota)

2. Phonon Absorption at the Magnetoroton Minimum

in the Fractional Quantum Hall Effect 276

J. DIGBY, C.J. MELLOR, R.H. EYLES, A.J. KENT, K.A. BENEDICT,L.J. CHALLIS, M. HENINI, C.T. FOXON & J.J. HARRIS

(University Nottingham)

3. Magnetization Measurements on Two-dimensional Electron Systemsin the Magnetic Quantum Limit 280

C.L. JONES, A. USHER, M. ELLIOTT, W.G. HERRENDEN- HARKER,

A. POTTS, R.A. SHEPHERD, G.A.C. JONES, D.A. RITCHIE,E. H. LINFIELD, M. GRMSHAW, T.S. CHENG & C.T. FOXON

(University Exeter)

4. Inelastic Scattering and Temperature-dependent Broadening of pxx-peaksin the IQHE 284

T. BRANDES, L. SCHWEITZER& B. KRAMER

(Institut Theoretical Physics, Hamburg)

5. Submillimeter Photoconductivity in Magnetically Quantized 2D Electron Gas 288

S.D. SUCHALKIN, Y.B. VASILYEV, Y.L. JVANOV, S.V. F/ANOV,

P.S. KOP'EV, I.G. SAVEL'EV & T. OHYAMA (Ioffe Institute, St. Petersburg)

6. Commensurability and dHvA Oscillations of Exchange Energy

of a Modulated 2DEG292

N.J.M. HORING, G. FIORENZA& H.L. CUI (Stevens Institute Technology)

7. QuantumMagnetic Field Oscillations in GaAs Superlattice Correlation Energy 296

G, FIORENZA & N.J.M. HORING (IBM Corp)

VI. MAGNETO-OPTICS

XIX

A. Quantum Hall Regime

1. Wave Vector-Induced Collective Excitations in the Quantum Hall Regime 300

L.L. SOHN, A. PINCZUK, B.S. DENNIS, L.N. PFEIFFER,

K.W. WEST & L. BREY (AT&T Bell Labs)

2. Magneto-photoluminescence of the 2D Hole System in p-type GaAs 304

A.G. DAVES, E.E. MITCHELL, R.G. CLARK, P.E. SIMMONDS.

D.A. RITCHIE, MY. SIMMONS, M. PEPPER & G.A C. JONES

(University New South Wales)

3. Theory ofExciton Emission from FQHE States 308

V.M. APALKOV & E.I. RASHBA (University Utah)

4. Exciton Spectra Under theFQHE Regime:

From a Continuum to Multiple Branches 312

E.I. RASHBA & V.M. APALKOV (University Utah)

5. Charge and Spin Excitation Gap in Tilted Magnetic Field 316

L.B. LIAO, D. HEIMAN, A. PINCZUK, L.N. PFEIFFER,

K. WEST & A.H. MACDONALD (MIT National MagnetLab)

6. Exciton Scattering and Localization Effects on the Luminescence

in the Integer Quantum Hall Regime320

F. PLENTZ, D. HEIMAN, A. PINCZUK, L.N. PFEIFFER & K.W. WEST

(MIT National Magnet Lab)

XX

B. Visible and Near-visible Region

1. Study of T-X Cross-over in GaAs/AlAs Short Period Superlattices

by Simultaneous Application ofHigh Pressure and Pulsed High Magnetic Fields 324

N. MIURA, H. KUNIMATSU, K. UCHIDA, S. SASAKI & T. YAGI

(ISSP Tokyo)

2. Evidence for the Exciton Condensation in Coupled Quantum Wells

at High Magnetic Fields 328

L.V. BUTOV, A. ZRENNER, G. ABSTREITER, G. BOHM & G. WEIMANN

(Schottky Institute, MUnchen)

3. MagneticField Dependent Photoluminescence Studies

of InGaAs/GaAs Strained Single Quantum Wells 332

E.D. JONES, L.R. DAWSON, J.F. KLEM, S.K. LYO,

X.C. LIU & D. HEIMAN (Sandia National Labs)

4. CoherentOptical Spectroscopy in High Magnetic Fields 336

I. BAR-JOSEPH, S. BAR-AD & Y. LEVINSON

(Weizmann Institute, Rehovot)

5. High Carrier Density Phenomena in Magneto-optical Spectraof 2D Semiconductor Structures

342

M. POTEMSKI (Grenoble High Magnetic Field Lab)

6. Magneto-Raman Scattering by Optic and Acoustic Phonons in Quantum Wells 350

T. RUF, A. CROS, J. SPITZER, G. GOLDONI & M. CARDONA

(Max-Planck-Institut, Stuttgart)

7. Magnetic Tuning ofSpatially Indirect Interband Transitions

in Parabolic and Rectangular Quantum Wells 354

M. FORKEL,H. HEITZER, J. EHRLICH, U. PENNER, G.H. dOHLER,

G. MACKH, W. OSSAU, K.L. CAMPMAN& A.C. GOSSARD

(University Erlangen-Ntlrnberg)

8. Exciton Recombination Dynamics in Wide Parabolic Quantum Wells

in Strong Magnetic Fields358

H. OKAMURA, D. HEIMAN, M. SUNDARAM & A.C. GOSSARD

(Northeastern University)

9. Transfer ofExcitons between Coupled CdTe Quantum Wells

Tuned by an External High Magnetic Field362

S. HAACKE, I. LAWRENCE, H. MARIETTE, P. PEYLA,

W.W. RUHLE & M. ZIGONE (Grenoble HighMagnetic Field Lab)

C. Infrared Region

xxi

1. Electronic Lifetimes ofExcited Landau Levels in GaAs/AlGaAs HeteroMructures 366W. HEISS, B. MURDIN. C.J.G.M. LANGERAK, G.M.H. KNIFPELS,I. MARAN, K. UNTERRAINER, E. GORNIK, C.R. PIDGEON,N.J. HOVENTER, W.T. WENCKEBACH & G. WEIMANN

(Technische University Wien)

2. Tilted Field Cyclotron Resonance in Megagauss Fields

using the Semimetalltc Superlattice System InAs/GaSb 370R.J. NICHOLAS, Y. SHIMAMOTO, Y. IMANAKA, N. MIURA,N.J. MASON & P.J. WALKER (University Oxford)

3. Shallow Donors in QuantumWells in Strong Magnetic Fields 374W. WIDMANN, T. DARNHOFER & U. ROSSLER (University Regensburg)

4. Far-IR Spectroscopy ofInAs/AlxGa,_xSb Type-II Quantum Wells:

Electron-Hole Interaction in High Magnetic Fields 378

J. KONO, B.D. McCOMBE, J.-P. CHENG, I. LO & W.C. MJTCHEL

(SUNY Buffalo)

5. The Influence of Light on the Confinement Potential

in GaAs/GaAlAs Heterojunctions 382

G.M, SUMMERS, J.G. MICHELS, D.M. SYMONS, RJ. NICHOLAS,

C.T. FOXON & J.J. HARRIS (University Oxford)

6. Millimetre Wave Induced Magnetic Field Pinningin a High-mobility Low-density Two-dimensional Electron Gas 386

G.M, SUNDARAM, I. KULAC, R. MEISELS, F. KUCHAR,

C.T. FOXON& J.J. HARRIS (Monranuniversitat Leoben)

7 Anomalies in the Cyclotron Resonance in InAs-AlSb Quantum Wells 390

Y.B. VASJLYEV, H. KOBORI, T. OHYAMA, S.D. SUCHALKIN,

S.V. TVANOV, P.S. KOP'EV & B.Y. MELTSER (Osaka University)

XXII

D. D-andX-

1. High Magnetic Field Properties of the Negatively-Charged Exciton (X~)in Modulation-doped Quantum Wells 394

R.T. COX, K. KHENG, K. SAMINADAYAR, T. BARON &

S. TATARENKO (CEA/CEN-Grenoble)

2. Resonant Polaron Coupling ofD~ Centers in Quantum Wells 402

S. HUANT & B. ETIENNE (Grenoble High Magnetic Field Lab)

3. Resonant Polaron Effects on D" Centers in GaAs/AlGaAs

Multiple-Quantum-Well Structures 406

J.-P. CHENG, B.D. McCOMBE & W. SCHAFF (MIT National Magnet Lab)

4. Magneto-optics of Impurity Transitions in Quantum Wells: Temperature Effects

and Evolution from D~ Centers to Localized Magnctoplasmons 410

A.B. DZYUBENKO, A.Y. SIVACHENKO, Y.E. LOZOVIK &

A.L. YABLONSKII (Russian Academy ofSciences)

VII. ELECTRON SOLID XXIII

1. Photoluminescence from the Wigner Crystal 416

H. FERTIG (University Kentucky)

2. Electron Liquid-Solid Phase Boundary at Finite Density and Field

in Heterostructures 424

R. PRICE (University Maryland)

3. Liquid and Solid Phases in the Dilute 2D Electron System 432

V.M. PUDALOV (Russian Academy ofScience, Moscow)

4. Inter-electron Coulomb Interaction and Disorder in the Activated Transportin Magnetic-field-induced Insulating Phase in 2D Systems 440

A. FUKANO, S. KAWAJI, J. WAKABAYASHI, K. HTRAKAWA,H. SAKAKI, T. GOTO, Y. KOIKE & T. FUKASE

(Gakushuin University, Tokyo)

5. A Molecular Dynamics Study ofOrientational Order and Depinningin a Model of the Disordered Electron Solid 444

M.-C. CHA & H.A. FERTIG (University Kentucky)

6. Correlated Interstitials and the Hall Effect in the Wigner Crystal 448

L. ZHENG & H.A. FERTIG (University Kentucky)

7. Transport and Photoluminescence Studies of 2D Hole Systems

in the Extreme QuantumLimit 452

P.J. RODGERS, B.L. GALLAGHER, M. HENINI, Y. PONOMAREV,

A. USHER & G. HILL (University Nottingham)

XXIV

VIII. NANOSTRUCTURES

A. Quantum dots

1. Single-Electron Tunneling in Quantum Dot Systems 456

R.J. HAUG (Max-Planck-Institut, Stuttgart)

2. Edge Properties ofQuantum Dots in the Fractional Quantum Hall Regime 464

M.D. JOHNSON (University Central Florida)

3. Study of a Coulomb Island in Strong Magnetic Fields 472

O. KLEIN, C.DE C. CHAMON, D. TANG, D.M. ABUSCH-MAGDER,

U. MEIRAV, X.-G. WEN, M.A. KASTNER & S.J. WIND (MIT)

4. Magnetic Field-induced Localization in a 2D Array of Quantum Dots 476

G.M. GUSEV, U. GENNSER, X. KLEBER, D.K. MAUDE,

J.-C. PORTAL, D.I. LUBYSHEV, Y.V. NASTAUSHEV & P. BASMAJI

(University Sao Paulo)

5. Magnetotransport of Electrons in Arrays of Antidots

Imposed Upon Si/Si0 7Ge0 3Heterostructures 480

D. TOBBEN, M. HOLZMANN, S. KUHN, H. LORENZ,

G. ABSTREITER, J.P. KOTTHAUS & F. SCHAFFLER

(Schottky Institut, MUnchen)

6. Magnetization and Heat Capacity of Two Electrons in 3D Quantum Dots 484

J.H. OH, K.J. CHANG, G. IHM, S.J. LEE & T.W. KIM

(Korea Advanced Institute, Korea)

7. The Diamagnetic Shift of Excitons in Strain-Confined Quantum Wires and Dots 488

T.H. GFROERER, M.D. STURGE, K. KASH, J.A. YATER, A.S. PLAUT,

P.S.D. LIN, L.T. FLOREZ, J.P. HARBISON, S.R. DAS & L. LEBRUN

(Dartmouth University)

8. Many Body Effects on Tunneling Through Quantum Dots:

Tunneling Rates and Addition Spectra 492

L. MARTIN-MORENO, J.J. PALACIOS, J.H. OAKNIN, C. TEJEDOR,

G. CHIAPPE & E. LOUIS (University Aut6noma de Madrid)

xxv

B. Quantum wires

1. Effect of a Magnetic Field on the Optical Spectra ofDoped Quantum Wires 496

C. TEJEDOR, F.J. RODRIGUEZ & M.R.S. TAVARES

(University Aut6noma de Madrid)

2. FIR-Transmission and -Photoconductivity Studies

of Shallow Etched Quantum Wires 504

CM. ENGELHARDT, R. STRENZ, M. ASCHAUER, G. BOHM,

G. WEIMANN, V. ROSSKOPF & E. GORNIK (Schottky Institut, Miinchen)

3. Resistance of a Long Wire in the Quantum Hall Regime 508

M.M. FOGLER & B.I. SHKLOVSKII (UniversityMinnesota)

4. High Excitation Magnetoluminescence Study of HI-V Quantum Wires 512

M. BAYER, A. FORCHEL, T. REINECKE& P. KMPP(University Wurzburg)

5. The Ballistic Transport in Crossed Electric and Magnetic Fields 516

T. NAKANISHI, T. OHTSUKI & M. SAITOH (Osaka University)

6. Energy-Momentum Relation for Magnetopolaronsin Quasi-One-Dimensional Quantum-Well Wires 520

L. WENDLER, R. KUGLER & R. HAUPT (Martin-Luther-University, Halle)

7. Aharonov-Bohm Effect in a Ring with Finite Width in the Tunneling Regime 524

W.-C. TAN & J.C. JNKSON (University Exeter)

8. Optical Singularities in QuantumWires in High Magnetic Fields 528

J.M. CALLEJA, A.R. GONI, A. PINCZUK, B.S. DENNIS, J.S. WEINER,

L.N. PFEIFFER, K.W. WEST (University Autonoma deMadrid)

9. Second-Harmonic Generation at High Magnetic Fields

in Quasiballistic GaAs/AlGaAs Quantum Wire 532

J. WR6BEL, F. KUCHAR, G. GRABECKI, T. DJETL, K. ISMAIL,

K.Y. LEE,R. LOSCH & W. SCHLAPP (Polish Academy Sciences)

10. Mesoscopic Photovoltaic Effect in Quantum Wires and Small Rings

in Strong Magnetic Fields536

A.A. BYKOV, G.M. GUSEV, Z.D. KVON, E.B. OL'SHANETSKTJ. &

S.P. MOSHENKO (Russian Academy Sciences, Siberia)

11. Magnetoresistance ofQuantum Wires for Self-Consistent

Ionized Impurity Scattering540

M. SUHRKE, A. MENSCHIG, S.Y. NIKITIN & H. SCHWEIZER

(University Regensburg)

XXVI

IX. TUNNELING

1. High Magnetic Field Studies of New Phenomena in Resonant Tunneling 544L. EAVES, T.M. FROMHOLD, J. WANG, P.H. BETON, N. MORI,T.J. FOSTER, H. BUHMANN, F.W. SHEARD, P.C. MAIN &M. HENINI (University Nottingham)

2. High-Field Magnetotunneling Spectroscopy of Valence Band Dispersionin Strained SiGe Quantum Wells 554

A. ZASLAVSKY, T.P. SMITH in, D.A. GRUTZMACHER, S.Y. LIN &

T.O. SEDGWICK (Brown University)

3. Magnetotransport in Triple Barrier Resonant Tunneling Diodes 562

M.R. DESHPANDE, M.A. REED, L.D. MACKS, S.A. BROWN,R.P. STARRETT, R.G. CLARK, C.L. FERNANDO & W.R. FRENSLEY

(Yale University)

4. Equilibrium Tunneling Spectroscopy of Impurity States

in Double BarrierResonant Tunneling Structures 566

L. GHENIM, J.C. PORTAL, D.L. SIVCO, A.Y. CHO & G. HILL (CNRS)

5. Transition from Laterally Confined States to Landau Levels

in a ID Resonant Tunnelling Diode 570

J. WANG, P.H. BETON, N. MORI, L. EAVES, P.C. MAIN,

TJ. FOSTER & M. HENINI (University Nottingham)

6. The Transition to Chaos in a QuantumWell

Subjected to a Strong Tilted Magnetic Field 574

J. MIAO, T.M. FROMHOLD, F.W. SHEARD, G. EDWARDS &

L. EAVES (University Nottingham)

7. Quenching of Ballistic Transport in a Resonant-TunnelingHot-Electron Transistor at Transverse High Magnetic Field 578

T. STRUTZ, T, TAKAMASU, N. MIURA, K. DVIAMURA &

L. EAVES (ISSP Tokyo)

8. Effect of Electron-Photon Coupling on the Magnetotunneling Current

Through a Semiconductor Heterostructure 582

J. 1NARREA Sc G. PLATERO (University Autdnoma de Madrid)

X. DELTA-DOPED LAYERS

xxvii

1 High-Field Magnetotransport in a Gag 8In0 2As Quantum Well

with a Parallel Si 6-Layer 588

M VAN DER BURGT, V.C. KARAVOLAS, F M. PEETERS,J SINGLETON, R J NICHOLAS, F. HERLACH, J J HARRIS,M VAN HOVE &G. BORGHS (University Oxford)

2 High-Field Magnetotransport in Si 6-Doped GaAs Layers 592

R BOGAERTS.P.M KOENRAAD, A F.W VAN DE STADT, H. LEOPOLD,

L VAN BOCKSTAL, F. HERLACH & J H WOLTER

(KathohekeUniversity Leuven)

3. Magnetic Freeze-Out Induced Transition from Three- to Two-Dimensional

Magnetotransport in Si 5-Doped InSb Layers Grown on GaAs 596

R. BOGAERTS, A. DE KEYSER, L. VAN BOCKSTAL, F. HERLACH,

V C. KARAVOLAS, F.M. PEETERS & G. BORGHS

(Katholieke University Leuven)

4 Quantum Transport of 6-Doped GaAs Structures 600

G. ZHENG, Y. WEI, S. GUO, D. TANG, Z PENG & Y. ZHANG

(Shanghai Institute of Technical Physics)

5. Quantum Mobilities as a Function ofthe Superlattice Period

in Si Atomic-Layer-Doped GaAs 604

A.B. HENRIQUES, V. BINDILATTI & N.F. OLIVEIRA JR.

(University Sao Paulo)

6. Electron Mobility in Si Delta-Doped GaAs 608

P.M. KOENRAAD, A.F.W. VAN DE STADT, J.M. SHI, G.Q. HAI,

N. STUDART, P. VANSANT, F.M. PEETERS, J.T. DEVREESE,

J.A.A.J. PERENBOOM & J.H. WOLTER (Eindhoven University Technology)

XI. Si-Ge

1. Quantum Oscillations in the Cyclotron Phonon Emission

from a Heated Two-Dimensional Electron Gas 612

J. COOPER, L.J. CHALLIS, F.F. OUALI & C.J. MELLOR

(University Nottingham)

2. Photoluminescence from a SiGe /Strained-Si/ SiGe Quantum Well

in a High Magnetic Field 616

U. GENNSER, F. COPPINGER, M. POTEMSKI, D.K. NAYAK &

J.C. PORTAL (CNRS-SNCI)

3. Si-SiGe 2DE&HS Transport in Pulsed High Magnetic Fields 620

F.F. FANG, R.B. DUNFORD, R.G. CLARK, R. NEWBURY,R.P. STARRETT, V.A. STADNIK, A.V. SKOUGAREVSKY,

R.H. MCKENZIE, J.O. CHU, K.E. ISMAIL & B.S. MEYERSON

(IBM Watson)

4. Quantum Resonances of Holes in Strained Ge/SixGej_x Quantum Wells 624

M. MERKLER, R. WINKLER, T. DARNHOFER & U. ROSSLER

(University Regensburg)

5. Quantum Effect ofHigh dc Magnetic Fields on Hot-Electron Scattering

by Acoustic Phonons in n-type Germanium 628

C.C. WU & C.J. LIN (National Chiao Tung University)

6. The Influence of the Second Confinement Subband on the QHE

in p-Ge/Ge, xSix Multi-Quantum Wells 632

Y.G. ARAPOV, N.A. GORODILOV, V.N. NEVEROV, M.V. YAKUNIN,

A.L. CHERNOV, O.A, KUZNETSOV, L.K. ORLOV & R.A. RUBTSOVA

(Russian Acad Sciences, Ekaterinburg)

7. The Novel State of a Two-Dimensional Electron Gas

near Silicon Surface in High Magnetic Fields 636

G.M. GUSEV, Z.D. KVON, V.T. DOLGOPOLOV & A.A. SHASHKIN

(Institute of Semiconductor Physics, Novosibirsk)

XXIX

XII. MAGNETIC SEMICONDUCTORS

1. Interface Characterization by Zeeman Effectin Structures with Semimagnetic Semiconductors 638

J.A. GAJ, J. CIBERT, G. FEUILLET, W. GRIESHABER,G. KARCZEWSKI, P. KOSSACKI, Y. MERLE D'AUBIGNE,N.T. KHOI, A. WASIEKI & T. WOJTOWICZ (Warsaw University)

2. Magnetic Polarons in Semimagnetic Quantum Wells and Superlattices 646D.R. YAKOVLEV (Wiirzburg University)

3. Magnetic Field Tunable Carrier Confinement in ZnSe/(ZnFe)Se Quantum Wells 654T. SCHMIEDEL, W.Y. YU, A. PETROU, H. ABAD, B.T. JONKER &J. WARNOCK (FSU National High Magnetic Field Lab)

4. Magnetic Acceptor Complex in Mn-Doped GaAs 658X.C. LIU, D. HEIMAN, J. HAO & K.C. HSIEH (MIT National Magnet Lab)

5. Magneto-Optical Study of CdTe/Cd^MnJe Multiple Quantum Wells

in the Mega-Gauss Field Range 662

S. KURODA, K. KOJfMA, K. KOBAYASHI, K. UCHJDA,N. MIURA & K. TAKITA (University Tsukuba)

6. Magnetization Studies of EuTe/PbTe Superlattices in High Magnetic Fields 666J.J. CHEN, M.S. DRESSELHAUS, E.J. MCNIFF, G. DRESSELHAUS,G. SPRDMGHOLZ & G. BAUER (MIT)

7. Time-Resolved Photoluminescence from Diluted Magnetic Semiconductor

Quantum Wells in High Magnetic Fields 670

M. DAHL, W. GEBAUER, R. PREDIGER & A. WAAG (University Wiirzburg)

8. Magneto-Resonances in Epitaxial Hg(Fe)Se Layers 674

O. PORTUGALL, M. BARCZEWSKI, S. LUTHER, N. PUHLMANN,M. VON ORTENBERG, R. SCHONFELD, T. WEDMER, D. SCHIKORA &

N. MIURA (Humboldt-University Berlin)

9. Investigation of Spin-Lattice Relaxation in Diluted Magnetic Semiconductors

in High Magnetic Fields 678

A.M. WITOWSKI, W. BARDYSZEWSKI, C. KUTTER, M. POTEMSKI,

P. WYDER, B. WITKOWSKA, A. MYCIELSKI & (Warsaw University)

10. Transition Metal Impurities and Band Offsets: Zni-jMn^Se 682

V.R. GALAKHOV, T.P. SURKOVA, E.Z. KURMAEV, V.I. SOKOLOV,

C. ZUBRAGEL, M. NEUMANN & Y.N. JVANOV

(Ural Russian Academy of of Sciences)

XXX

XIII. 3D SYSTEMS

1 Quantum Aspects of Landau Emission by Magnetoelectnc Photoeffect

of InSb at High Magnetic Fields 686T MORIMOTO, M CHIBA, S UEDA, G KIDO & T HAMAMOTO

(Kyoto University)

2 Resonant Magneto-polarons m InP 690F IIKAWA, T RUF &M CARDONA (Max Planck Institut, Stuttgart)

3 Far-infrared Magneto-spectra ofp-InP under Ultra-high Magnetic Fields 694H YOKOI.N MIURA, S TAKEYAMA&M OSJNSKI (ISSP Tokyo)

4 Irreducible Spherical Tensor Formulation of Magneto-optical Transitionsin the Extended Pidgeon and Brown Model 698G FAVROT (MIT)

5 The Wave-function Mixture ofSubband Electron Landau Levels in HgCdTe 702J CHU, R SIZMANN, K LIU & F KOCH (Shanghai Inst Technical Physics)

6 Quantum Oscillations in the Hall Effect

ofThm Sc, xErxAs Epitaxial Layers Buned in GaAs 706

R BOGAERTS.A DE KEYSER, F. HERLACH, F M PEETERS,F DEROSA, C J PALMSTR0M, D. BREHMER & S J ALLEN, JR

(Katholieke University Leuven)

7 Anisotropic Electron-Phonon Interaction Observedin the Magnetophonon Resonance of Black Phosphorus 710

T STRUTZ.N MIURA, Y AKAHAMA&G KIDO (ISSP Tokyo)

XXXI

ORGANIC CONDUCTORS

Oscillatory Magnetotransport Effects due to Fermi Surface Geometrical Resonance 714Y.IYE (ISSP Tokyo)

Fermi Surface Structure in the Low-Dimensional

Organic Conductors (BEDT-TTF)2X 722S.J. KLEPPER, J.S. BROOKS, G.J. ATHAS, C. CAMPOS, S. VALFELLS,P. SANDHU, M. TOKUMOTO, N. KINOSHITA, T. KJNOSHTTA,Y. TANAKA, H. ANZAI, J. VAN BENTUM, J.A.A.J. PERENBOOM,D. HEIMAN, X. LIU & U. GENNSER (MTT National Magnet Lab)

Fermiology and Field-Induced Phase Transitions of Low-Dimensional

Organic Conductors in High Magnetic Fields 726C.C. AGOSTA, C.H. MD3LKE, S.A. IVANOV, D.A. HOWE,F.M. MORGAN, M. TOKUMOTO, N. KINOSHITA & H. ANZAI

(Clark University)

Millimeter Wave Photoconductivity in the Magnetic-Field-Induced Insulator Phase

of Kish Graphite 730T. TAKAMASU & N. MIURA (ISSP Tokyo)

Suppression ofDensity-Wave by the Magnetic Breakdown:A Possible Mechanism for High-Magnetic-Field Phase Transition

in the Quasi-Two-Dimensional Organic Conductors a-(BEDT- TTF)2MHg(SCN)4 734T. OSADA, S. KAGOSHJMA & N. MIURA (ISSP Tokyo)

A Study ofthe Rapid Oscillations of (TMTSF)2C104in Different Regions of the H-T Phase Diagram 738

C.C. AGOSTA, D.A. HOWE, M.A. ANITA, S.A. IVANOV,C.H. MIELKE & F.M. MORGAN (Clark University)

Magnetic-Field-Induced Electronic Phase Transition in Neutron-Irradiated Graphite 742

Y. YAGUCHT, Y. IYE, T. TAKAMASU, N. MIURA & T. IWATA

(ISSP Tokyo)

Infrared Magnetospectroscopy in Graphite Under Pulsed Ultrahigh Magnetic Fields 746

Y. SHIMAMOTO, H. NOJIRI & N. MIURA (ISSP Tokyo)

xxxii

XV. EXPERIMENTAL METHODS

1. Measuring Quantum Hall Resistors in Pulsed Magnetic Fields 750

M. VAN DER BURGT, F.M. PEETERS, J. SINGLETON, RJ. NICHOLAS,F. HERLACH, J.J. HARRIS & C.T. FOXON (University Oxford)

2. Instrumentation for Semiconductor Physics Research

at the Australian National Pulsed Magnet Laboratory 754

R.G. CLARK, R. NEWBURY, R.P. STARRET, L.D. MACKS,

A.V. SKOUGAREVSKY & A.G. DAVIES (University New South Wales)