ONE-DIMENSIONAL PLASMON DISPERSION AND DISPERSIONLESS INTERSUBBAND EXCITATIONS IN GAAS QUANTUM WIRES

被引：360

作者：

GONI, AR ^{[1
]}

PINCZUK, A ^{[1
]}

WEINER, JS ^{[1
]}

CALLEJA, JM ^{[1
]}

DENNIS, BS ^{[1
]}

PFEIFFER, LN ^{[1
]}

WEST, KW ^{[1
]}

机构：

[1] UNIV AUTONOMA MADRID,MADRID 34,SPAIN

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.67.3298

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy and the wave-vector dispersion of single-particle and collective excitations of the one-dimensional (1D) electron gas in GaAs quantum wires have been determined by resonant inelastic light scattering. In the 1D quantum limit the intrasubband plasmon displays the linear dispersion characteristic of 1D free-electron behavior. Quantitative agreement is found with calculations based on the random-phase approximation. In contrast, collective 1D intersubband excitations appear as dispersionless and have a negligible shift from the single-particle energy, This mode exhibits the unique Landau damping expected for a 1D system with two occupied subbands.

引用

收藏

页码：3298 / 3301

页数：4

相关论文

共 22 条

[1] VOLTAGE-TUNABLE QUANTUM DOTS ON SILICON [J].

ALSMEIER, J ;

BATKE, E ;

KOTTHAUS, JP .

PHYSICAL REVIEW B, 1990, 41 (03) :1699-1702

[2] STRONG INTERMEDIATE-STATE EFFECTS IN EXCITON-MEDIATED ELECTRONIC INTRASUBBAND SCATTERING IN MULTIPLE-QUANTUM-WELL STRUCTURES [J].

BERZ, M ;

WALKER, JF ;

VONALLMEN, P ;

STEIGMEIER, EF ;

REINHART, FK .

PHYSICAL REVIEW B, 1990, 42 (18) :11957-11960

[3] OPTICAL AND MAGNETO-OPTICAL ABSORPTION IN PARABOLIC QUANTUM WELLS [J].

BREY, L ;

JOHNSON, NF ;

HALPERIN, BI .

PHYSICAL REVIEW B, 1989, 40 (15) :10647-10649

[4] ELECTROMAGNETIC RESPONSE OF LOWER-DIMENSIONAL ELECTRON-SYSTEMS - IMPLICATIONS OF OMITTING THE GROUND-STATE CALCULATION [J].

BROIDO, DA ;

BAKSHI, P ;

KEMPA, K .

SOLID STATE COMMUNICATIONS, 1990, 76 (05) :613-616

[5]

CALLEJA JM, IN PRESS SOLID STATE

[6] ONE-DIMENSIONAL PLASMONS IN ALGAAS/GAAS QUANTUM WIRES [J].

DEMEL, T ;

HEITMANN, D ;

GRAMBOW, P ;

PLOOG, K .

PHYSICAL REVIEW LETTERS, 1991, 66 (20) :2657-2660

[7] FAR-INFRARED RESPONSE OF ONE-DIMENSIONAL ELECTRONIC SYSTEMS IN SINGLE-LAYERED AND 2-LAYERED QUANTUM WIRES [J].

DEMEL, T ;

HEITMANN, D ;

GRAMBOW, P ;

PLOOG, K .

PHYSICAL REVIEW B, 1988, 38 (17) :12732-12735

[8] ANISOTROPIC PLASMON DISPERSION IN A LATERAL QUANTUM-WIRE SUPERLATTICE [J].

EGELER, T ;

ABSTREITER, G ;

WEIMANN, G ;

DEMEL, T ;

HEITMANN, D ;

GRAMBOW, P ;

SCHLAPP, W .

PHYSICAL REVIEW LETTERS, 1990, 65 (14) :1804-1807

[9] MAGNETOPLASMA MODES OF A SPATIALLY PERIODIC TWO-DIMENSIONAL ELECTRON-GAS [J].

ELIASSON, G ;

WU, JW ;

HAWRYLAK, P ;

QUINN, JJ .

SOLID STATE COMMUNICATIONS, 1986, 60 (01) :41-44

[10] ANALYTICAL RESULTS FOR SEMICONDUCTOR QUANTUM-WELL WIRE - PLASMONS, SHALLOW IMPURITY STATES, AND MOBILITY [J].

GOLD, A ;

GHAZALI, A .

PHYSICAL REVIEW B, 1990, 41 (11) :7626-7640