Transmission phase of a quantum dot with Kondo correlation near the unitary limit

被引：123

作者：

Ji, Y ^{[1
]}

Heiblum, M ^{[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 / 07期

关键词：

D O I：

10.1103/PhysRevLett.88.076601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The complex transmission amplitude of a quantum dot (QD) with Kondo correlation was measured near the unitary limit, The transmission phase was observed to evolve almost linearly over a range of about 1.5pi when the Fermi energy was scanned through a spin degenerate energy level of the QD. Surprisingly, the phase in the Coulomb Blockade regime, with one more electron entering the dot, was strongly affected by a preexistence of Kondo correlation. These results suggest that a full explanation of the Kondo effect may go beyond the framework of the Anderson model.

引用

页码：4 / 766014

页数：4