Charge distribution in a Kondo-correlated quantum dot

被引：74

作者：

Sprinzak, D ^{[1
]}

Ji, Y ^{[1
]}

Heiblum, M ^{[1
]}

Mahalu, D ^{[1
]}

Shtrikman, H ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, Braun Ctr Submicron Res, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.88.176805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on direct measurement of charge and its distribution in a Kondo correlated quantum dot (QD). A noninvasive potential-sensitive detector, in proximity with a QD, reveals that, although the conductance of the QD is significantly enhanced as it enters the Kondo regime, the average charge remains unaffected. This demonstrates the separation between spin and charge degrees of freedom. We find, however, under certain conditions, an abrupt redistribution of charge in the QD, taking place with an onset of Kondo correlation. This suggests a correlation between the spin and charge degrees of freedom.

引用

页数：4

共 21 条

[1] LOCALIZED MAGNETIC STATES IN METALS [J].