N-ELECTRON GROUND-STATE ENERGIES OF A QUANTUM-DOT IN MAGNETIC-FIELD

被引：580

作者：

ASHOORI, RC ^{[1
]}

STORMER, HL ^{[1
]}

WEINER, JS ^{[1
]}

PFEIFFER, LN ^{[1
]}

BALDWIN, KW ^{[1
]}

WEST, KW ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.71.613

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using single-electron capacitance spectroscopy, we map the magnetic field dependence of the ground state energies of a single quantum dot containing from 0 to 50 electrons. The experimental spectra reproduce many features of a noninteracting electron model with an added fixed charging energy. However, in detailed observations deviations are apparent: Exchange induces a two-electron singlet-triplet transition, self-consistency of the confinement potential causes the dot to assume a quasi-two-dimensional character, and features develop which are suggestive of the fractional quantum Hall effect.

引用

页码：613 / 616

页数：4

共 15 条

[11] HIGH-MOBILITY VARIABLE-DENSITY TWO-DIMENSIONAL ELECTRON-GAS IN INVERTED GAAS-ALGAAS HETEROJUNCTIONS
MEIRAV, U
HEIBLUM, M
STERN, F
[J]. APPLIED PHYSICS LETTERS, 1988, 52 (15) : 1268 - 1270
[12] SINGLE-ELECTRON CHARGING OF QUANTUM-DOT ATOMS
MEURER, B
HEITMANN, D
PLOOG, K
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (09) : 1371 - 1374
[13] ZEEMAN BIFURCATION OF QUANTUM-DOT SPECTRA - COMMENT
SILSBEE, RH
ASHOORI, RC
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (16) : 1991 - 1991
[14] OBSERVATION OF SINGLE-ELECTRON CHARGING IN DOUBLE-BARRIER HETEROSTRUCTURES
SU, B
GOLDMAN, VJ
CUNNINGHAM, JE
[J]. SCIENCE, 1992, 255 (5042) : 313 - 315
[15] SPIN-SINGLET-SPIN-TRIPLET OSCILLATIONS IN QUANTUM DOTS
WAGNER, M
MERKT, U
CHAPLIK, AV
[J]. PHYSICAL REVIEW B, 1992, 45 (04): : 1951 - 1954

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