Kondo effect in the presence of magnetic impurities

被引：110
|
作者：
Heersche, HB
de Groot, Z
Folk, JA
Kouwenhoven, LP
van der Zant, HSJ
Houck, AA
Labaziewicz, J
Chuang, IL
机构：
[1] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands
[2] MIT, Media Lab, Cambridge, MA 02139 USA
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 01期
关键词：
D O I：
10.1103/PhysRevLett.96.017205
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We measure transport through gold grain quantum dots fabricated using electromigration, with magnetic impurities in the leads. A Kondo interaction is observed between dot and leads, but the presence of magnetic impurities results in a gate-dependent zero-bias conductance peak that is split due to a RKKY interaction between the spin of the dot and the static spins of the impurities. A magnetic field restores the single Kondo peak in the case of an antiferromagnetic RKKY interaction. This system provides a new platform to study Kondo and RKKY interactions in metals at the level of a single spin.
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页数：4
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