SPECTRUM OF COLLECTIVE MODES AND POSSIBLE SYMMETRY-BREAKING TRANSITIONS IN ARRAYS OF QUANTUM DOTS

被引：14

作者：

CHAPLIK, AV ^{[1
]}

IORIATTI, L ^{[1
]}

机构：

[1] INST SEMICOND PHYS,NOVOSIBIRSK 90,USSR

来源：

SURFACE SCIENCE | 1992年 / 263卷 / 1-3期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/0039-6028(92)90367-F

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the effects of Coulomb interactions in a two-dimensional array of quantum dots subjected to lateral harmonic confinement. Coulomb coupling among dots is manifested in the spectrum of collective modes through the wavevector dependent renormalization of the bare harmonic frequency of individual dots. For sufficiently large coupling, the spectrum is shown to become unstable against the appearance of symmetry broken phases.

引用

页码：354 / 358

页数：5

共 15 条

[1] VOLTAGE-TUNABLE QUANTUM DOTS ON SILICON
ALSMEIER, J
BATKE, E
KOTTHAUS, JP
[J]. PHYSICAL REVIEW B, 1990, 41 (03): : 1699 - 1702
[2] ELECTRONIC-PROPERTIES OF TWO-DIMENSIONAL SYSTEMS
ANDO, T
FOWLER, AB
STERN, F
[J]. REVIEWS OF MODERN PHYSICS, 1982, 54 (02) : 437 - 672
[3] BORN M, 1954, DYNAMICAL THEORY CRY, P103
[4] OPTICAL AND MAGNETO-OPTICAL ABSORPTION IN PARABOLIC QUANTUM WELLS
BREY, L
JOHNSON, NF
HALPERIN, BI
[J]. PHYSICAL REVIEW B, 1989, 40 (15): : 10647 - 10649
[5] CHAPLIK AV, 1989, JETP LETT+, V50, P44
[6] NONLOCAL DYNAMIC-RESPONSE AND LEVEL-CROSSINGS IN QUANTUM-DOT STRUCTURES
DEMEL, T
HEITMANN, D
GRAMBOW, P
PLOOG, K
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (07) : 788 - 791
[7] GOVOROV AO, 1990, PISMA ESKP TEOR FIZ, V52, P681
[8] ZEEMAN BIFURCATION OF QUANTUM-DOT SPECTRA
HANSEN, W
SMITH, TP
LEE, KY
BRUM, JA
KNOEDLER, CM
HONG, JM
KERN, DP
[J]. PHYSICAL REVIEW LETTERS, 1989, 62 (18) : 2168 - 2171
[9] ELECTRON-STATES IN A GAAS QUANTUM DOT IN A MAGNETIC-FIELD
KUMAR, A
LAUX, SE
STERN, F
[J]. PHYSICAL REVIEW B, 1990, 42 (08): : 5166 - 5175
[10] LANDAU LD, 1959, STATISTICAL PHYSICS, P424

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