Magnetoplasmons in a tunable periodically modulated magnetic field

被引：14

作者：

Cinà, S

Whittaker, DM

Arnone, DD

Burke, T

Hughes, HP

Leadbeater, M

Pepper, M

Ritchie, DA

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Toshiba Res Europe Ltd, Cambridge CB4 0WE, England

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.83.4425

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first infrared optical measurements of a two dimensional electron gas (2DEG) in a periodically modulated magnetic field. The 2DEG is produced using epitaxial regrowth on a corrugated surface, so that the component of an externally applied magnetic field perpendicular to the 2DEG is spatially modulated. Two active modes are observed, with intensities and frequencies which depend on the amplitude of the field modulation as well as the total external magnetic field. These modes arise from field modulation-induced coupling between the 2DEG magnetoplasmons. Calculations of the magnetoplasmon band structure in a modulated field are in excellent agreement with the experimental data.

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页码：4425 / 4428

页数：4

相关论文

共 17 条

[1] Hydrogen radical surface cleaning of GaAs for MBE regrowth [J].

Burke, TM ;

Linfield, EH ;

Ritchie, DA ;

Pepper, M ;

Burroughes, JH .

JOURNAL OF CRYSTAL GROWTH, 1997, 175 :416-421

[2] Tunable, strongly non parabolic confinement in a quasi-one-dimensional electron gas formed by epitaxial regrowth [J].

Cina, S ;

Arnone, DD ;

Burroughes, JH ;

Norman, CE ;

Burke, T ;

Hughes, HP ;

Pepper, M ;

Ritchie, DA .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1998, 37 (3B) :1570-1573

[3] Plasmons in spatially non-uniform magnetic fields [J].

Cina, S ;

Arnone, DD ;

Burroughes, JH ;

Holmes, SN ;

Burke, T ;

Hughes, HP ;

Ritchie, DA ;

Pepper, M .

PHYSICA B-CONDENSED MATTER, 1998, 249 :286-290

[4] Density modulation and electrostatic self-consistency in a two-dimensional electron gas subject to a periodic quantizing magnetic field [J].

Gossmann, UJ ;

Manolescu, A ;

Gerhardts, RR .

PHYSICAL REVIEW B, 1998, 57 (03) :1680-1689

[5] Two-dimensional electrons in lateral magnetic superlattices [J].

Ibrahim, IS ;

Peeters, FM .

PHYSICAL REVIEW B, 1995, 52 (24) :17321-17334

[6] MAGNETORESISTANCE OSCILLATION IN 2-DIMENSIONAL ELECTRON-GAS UNDER SPATIALLY MODULATED MAGNETIC-FIELD [J].

IZAWA, S ;

KATSUMOTO, S ;

ENDO, A ;

IYE, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1995, 34 (8B) :4306-4308

[7] CYCLOTRON RESONANCE AND DE HAAS-VAN ALPHEN OSCILLATIONS OF AN INTERACTING ELECTRON GAS [J].

KOHN, W .

PHYSICAL REVIEW, 1961, 123 (04) :1242-&

[8] MAGNETOTRANSPORT IN A NONPLANAR 2-DIMENSIONAL ELECTRON-GAS [J].

LEADBEATER, ML ;

FODEN, CL ;

BURROUGHES, JH ;

PEPPER, M ;

BURKE, TM ;

WANG, LL ;

GRIMSHAW, MP ;

RITCHIE, DA .

PHYSICAL REVIEW B, 1995, 52 (12) :R8629-R8632

[9] Collective modes and the far-infrared absorption of the two-dimensional electron gas in a periodic quantizing magnetic field [J].

Manolescu, A ;

Gudmundsson, V .

SUPERLATTICES AND MICROSTRUCTURES, 1998, 23 (06) :1169-1180

[10] QUANTUM TRANSPORT OF A 2-DIMENSIONAL ELECTRON-GAS IN A SPATIALLY MODULATED MAGNETIC-FIELD [J].

PEETERS, FM ;

VASILOPOULOS, P .

PHYSICAL REVIEW B, 1993, 47 (03) :1466-1473