Spectroscopic profiles of a magnetic dimer on a metal surface
Spectroscopic profiles of a magnetic dimer on a metal surface
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DOI：
10.1016/j.ssc.2009.06.007
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发表时间：
2009-08-01
影响因子：
2.1
通讯作者：
Kasai, Hideaki
中科院分区：
文献类型：
--
作者：
Minamitani, Emi;Nakanishi, Hiroshi;Kasai, Hideaki
为了更好地理解金属表面上磁性二聚体的扫描隧道光谱（STS）谱，我们基于与现有实验装置对应的模型哈密顿量计算微分电导（dI/dV）。结果表明，铁磁RKKY相互作用使Yosida-Kondo共振峰变尖，反铁磁RKKY相互作用使Yosida-Kondo共振峰变宽.这些结果表明，我们所考虑的表面系统从近藤效应主导政权的RKKY相互作用主导政权的平滑过渡。(C)2009爱思唯尔有限公司保留所有权利。
To better understand the Scanning Tunneling Spectroscopy (STS) spectra for a magnetic dimer on a metal surface, we calculate the differential conductance (dI/dV) based on the model Hamiltonian corresponding to an available experimental set-up. Our results show that the ferromagnetic RKKY interaction sharpens the Yosida-Kondo resonance and, on the other hand, the antiferromagnetic RKKY interaction gradually broadens the Yosida-Kondo resonance, as observed in the experiments. These results indicate a smooth transition from the Kondo effect dominating regime to the RKKY interaction dominating regime for the surface system we have considered. (C) 2009 Elsevier Ltd. All rights reserved.