Statistics of Coulomb-blockade peak spacings within the Hartree-Fock approximation

被引：43
作者：
Cohen, A [1 ]
Richter, K
Berkovits, R
机构：
[1] Bar Ilan Univ, Dept Phys, Minerva Ctr Phys Mesoscop Fractals & Neural Netwo, IL-52900 Ramat Gan, Israel
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
PHYSICAL REVIEW B | 1999年 / 60卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.60.2536
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the effect of electronic interactions on the addition spectra and on the energy-level distributions of two-dimensional quantum dots with weak disorder using the self-consistent Hartree-Fock approximation for spinless electrons. We show that the distribution of the conductance peak spacings is Gaussian with large fluctuations that exceed, in agreement with experiments, the mean level spacing of the noninteracting system. We analyze this distribution on the basis of Koopmans' theorem. We show furthermore that the occupied and unoccupied Hartree-Fock levels exhibit Wigner-Dyson statistics. [S0163-1829(99)09427-8].
引用
收藏
页码：2536 / 2540
页数：5
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