Disappearance of the Kondo resonance for atomically fabricated cobalt dimers

被引：112

作者：

Chen, W ^{[1
]}

Jamneala, T ^{[1
]}

Madhavan, V ^{[1
]}

Crommie, MF ^{[1
]}

机构：

[1] Boston Univ, Dept Phys, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.60.R8529

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have used scanning tunneling spectroscopy and atomic manipulation to study the interaction between a single pair of magnetic atoms at the surface of a nonmagnetic metal. The local electronic structure of cobalt adatoms on Au(111) was measured for different cobalt-cobalt interatomic spacings at T=6 K. Artificially fabricated cobalt dimers are found to show an abrupt disappearance of the Kondo resonance for cobalt-cobalt separations less than 6 Angstrom. This behavior is explained as the result of reduced exchange coupling between gold conduction electrons and ferromagnetic cobalt dimers. [S0163-1829(99)50436-03].

引用

页码：R8529 / R8532

页数：4

共 26 条

[1]

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