Spin-polarized STM for a Kondo adatom

被引:17
作者
Seridonio, A. C. [1 ,2 ]
Souza, F. M. [1 ]
Shelykh, I. A. [1 ,3 ]
机构
[1] Univ Brasilia, ICCMP, BR-04513 Brasilia, DF, Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24310246 Niteroi, RJ, Brazil
[3] Univ Iceland, Dept Sci, IS-107 Reykjavik, Iceland
关键词
ANDERSON MODEL; RESONANCE; SPECTROSCOPY; STATES;
D O I
10.1088/0953-8984/21/9/095003
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We investigate the bias dependence of the tunneling conductance between a spin-polarized (SP) scanning tunneling microscope (STM) tip and the surface conduction states of a normal metal with a Kondo adatom. Quantum interference between tip-host metal and tip-adatom-host metal conduction paths is studied in the full range of the Fano parameter q. The spin-polarized STM gives rise to a splitting of the Kondo peak and asymmetry in the zero-bias anomaly, depending on the lateral tip-adatom distance. For increasing lateral distances, the Kondo peak splitting shows a strong suppression and the spin-polarized conductance exhibits the standard Fano-Kondo profile.
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页数:7
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