Changing the Electronic Spectrum of a Quantum Dot by Adding Electrons

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.5900· OSTI ID:289141

Patel, S R; Stewart, D R; Marcus, C M ^[1]; Goekcedag, M; Alhassid, Y; Stone, A D ^[2]; Duruoez, C I; Harris, Jr, J S ^[3]

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1. Department of Physics, Stanford University, Stanford, California 94305 (United States)
2. Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520 (United States)
3. Electrical Engineering Department, Stanford University, Stanford, California 94305 (United States)

The temperature dependence of Coulomb blockade peak height correlation is used to investigate how adding electrons to a quantum dot alters or {open_quotes}scrambles{close_quotes} its electronic spectrum. Deviations from finite-temperature random matrix theory with an unchanging spectrum indicate spectral scrambling after a small number of electrons are added. Enhanced peak-to-peak correlations at low temperature are observed. Peak height statistics show similar behavior in several dot configurations despite significant differences in correlations. {copyright} {ital 1998} {ital The American Physical Society }

• Research Organization: Yale University
• DOE Contract Number: FG02-91ER40608
• OSTI ID: 289141
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRIC CONDUCTIVITY
ELECTRON CORRELATION
ELECTRON-ELECTRON INTERACTIONS
GALLIUM ARSENIDES
HETEROJUNCTIONS
TEMPERATURE DEPENDENCE