Mesoscopic fluctuations of elastic contunneling in Coulomb blockaded quantum dots

被引：43

作者：

Cronenwett, SM ^{[1
]}

Patel, SR ^{[1
]}

Marcus, CM ^{[1
]}

Campman, K ^{[1
]}

Gossard, AC ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2312

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report measurements of mesoscopic fluctuations of elastic cotunneling in Coulomb blockaded quantum dots. Unlike resonant tunneling on Coulomb peaks, cotunneling in the valleys is sensitive to charging effects. We observe a larger magnetic field scale for the cotunneling (valley) fluctuations compared to the peaks, as well as an absence of ''weak localization'' (reduced conductance at B = 0) in valleys. Cotunneling fluctuations remain correlated over several valleys while peak conductance correlation decreases quickly.

引用

页码：2312 / 2315

页数：4

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