Kondo effect of a Co atom on Cu(111) in contact with an iron tip

被引：35

作者：

Neel, N. ^{[1
]}

Kroeger, J. ^{[1
]}

Berndt, R. ^{[1
]}

机构：

[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 23期

关键词：

RESONANCE;

D O I：

10.1103/PhysRevB.82.233401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single Co atoms, which exhibit a Kondo effect on Cu(111), are contacted with Cu and Fe tips in a low-temperature scanning tunneling microscope. With Fe tips, the Kondo effect persists with the Abrikosov-Suhl resonance significantly broadened. In contrast, for Cu-covered W tips, the resonance width remains almost constant throughout the tunneling and contact ranges. The distinct changes in the line width are interpreted in terms of modifications of the Co d state occupation owing to hybridization with the tip apex atoms.

引用

页数：4

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