QUANTUM-DOT GROUND-STATES IN A MAGNETIC-FIELD STUDIED BY SINGLE-ELECTRON TUNNELING SPECTROSCOPY ON DOUBLE-BARRIER HETEROSTRUCTURES

被引：103

作者：

SCHMIDT, T

TEWORDT, M

BLICK, RH

HAUG, RJ

PFANNKUCHE, D

VONKLITZING, K

FORSTER, A

LUTH, H

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, D-70569 STUTTGART, GERMANY

[2] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST SCHICHT & IONENTECH, D-52425 JULICH, GERMANY

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.51.5570

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The few-electron ground states of a strongly asymmetric nanometer-scale AlxGa1-xAs-GaAs double-barrier quantum dot are probed by single-electron tunneling spectroscopy. Magnetotunneling measurements reveal transitions of spin and orbital angular momentum of the two- and three-electron quantum-dot ground states, respectively. The experimental data are compared with exact calculations of the few-electron ground-state energies. Magnetic-field-induced modulations of the tunneling rate in the many-electron regime indicate correlations in the involved states. © 1995 The American Physical Society.

引用

收藏

页码：5570 / 5573

页数：4

相关论文

共 14 条

[1] N-ELECTRON GROUND-STATE ENERGIES OF A QUANTUM-DOT IN MAGNETIC-FIELD [J].

ASHOORI, RC ;

STORMER, HL ;

WEINER, JS ;

PFEIFFER, LN ;

BALDWIN, KW ;

WEST, KW .

PHYSICAL REVIEW LETTERS, 1993, 71 (04) :613-616

[2] MONTE-CARLO CALCULATION OF FEW-ELECTRON SYSTEMS IN QUANTUM DOTS [J].

BOLTON, F .

SOLID-STATE ELECTRONICS, 1994, 37 (4-6) :1159-1162

[3] RESONANT TUNNELING THROUGH THE BOUND-STATES OF A SINGLE DONOR ATOM IN A QUANTUM-WELL [J].

DELLOW, MW ;

BETON, PH ;

LANGERAK, CJGM ;

FOSTER, TJ ;

MAIN, PC ;

EAVES, L ;

HENINI, M ;

BEAUMONT, SP ;

WILKINSON, CDW .

PHYSICAL REVIEW LETTERS, 1992, 68 (11) :1754-1757

[4] Note to the Quantification of the harmonic Oscillator in a Magnetic Field [J].

Fock, V. .

ZEITSCHRIFT FUR PHYSIK, 1928, 47 (5-6) :446-448

[5] RESONANT-TUNNELING THROUGH DONOR MOLECULES [J].

GEIM, AK ;

FOSTER, TJ ;

NOGARET, A ;

MORI, N ;

MCDONNELL, PJ ;

LASCALA, N ;

MAIN, PC ;

EAVES, L .

PHYSICAL REVIEW B, 1994, 50 (11) :8074-8077

[6]

GRABERT H, 1992, NATO ADV STUDY I S B, V294

[7]

Grambow P., 1990, Microelectronic Engineering, V11, P47, DOI 10.1016/0167-9317(90)90071-Z

[8] SINGLE-ELECTRON CAPACITANCE SPECTROSCOPY OF FEW-ELECTRON ARTIFICIAL ATOMS IN A MAGNETIC-FIELD - THEORY AND EXPERIMENT [J].

HAWRYLAK, P .

PHYSICAL REVIEW LETTERS, 1993, 71 (20) :3347-3350

[9] CAPACITANCE SPECTROSCOPY IN QUANTUM DOTS - ADDITION SPECTRA AND DECREASE OF TUNNELING RATES [J].

PALACIOS, JJ ;

MARTINMORENO, L ;

CHIAPPE, G ;

LOUIS, E ;

TEJEDOR, C .

PHYSICAL REVIEW B, 1994, 50 (08) :5760-5763

[10] OBSERVATION OF DISCRETE ELECTRONIC STATES IN A ZERO-DIMENSIONAL SEMICONDUCTOR NANOSTRUCTURE [J].

REED, MA ;

RANDALL, JN ;

AGGARWAL, RJ ;

MATYI, RJ ;

MOORE, TM ;

WETSEL, AE .

PHYSICAL REVIEW LETTERS, 1988, 60 (06) :535-537