An approximate sign sum rule for the transmission amplitude through a quantum dot

被引：38

作者：

Baltin, R

Gefen, Y

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.83.5094

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the phase of the transmission amplitude through a disordered quantum dot in the Coulomb blockade regime. We calculate the phase dependence on gate voltage for a disorder configuration. We show that over a "period," consisting of a resonance and a transmission valley, the total phase change is 0 (mod2 pi). Deviations from this sum rule are small in the parameter (level spacing and/or charging energy). The disorder-averaged phase-phase correlation function is found showing interaction-induced correlations between phases at different gate voltages.

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页码：5094 / 5097

页数：4

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