Conductance peak distributions in quantum dots at finite temperature: Signatures of the charging energy

Journal Article · Tue Sep 01 00:00:00 EDT 1998 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.58.R7524· OSTI ID:658499

Alhassid, Y; Goekcedag, M; Stone, A D ^[1]

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1. Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520 (United States)

We derive the finite temperature conductance peak distributions and peak-to-peak correlations for quantum dots in the Coulomb blockade regime assuming the validity of random-matrix theory. The distributions are universal, depending only on the symmetry class and the temperature measured in units of the mean level spacing, {Delta}. When the temperature is comparable to {Delta} several resonances contribute to the same conductance peak and we find significant deviations from the previously known T{lt}{Delta} distributions. In contrast to the T{lt}{Delta} case, these distributions show a strong signature of the charging energy and charge quantization on the dot. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 658499
• Journal Information: Physical Review, B: Condensed Matter, Vol. 58, Issue 12; Other Information: PBD: Sep 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SEMICONDUCTOR MATERIALS
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ELECTRIC CONDUCTIVITY
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