Effect of assisted hopping on the formation of local moments in magnetic impurities and quantum dots

被引:13
作者
Guinea, F [1 ]
机构
[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
关键词
D O I
10.1103/PhysRevB.67.195104
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Assisted hopping effects in magnetic impurities and quantum dots are analyzed. The magnitude of the assisted hopping term in a quantum dot in the limit of large level spacing is comparable to other corrections induced by the electron-electron interactions. Assisted hopping leads to differences between conductance peaks associated to the same level, and, when the effect is sufficiently strong, to local pairing correlations.
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页数:8
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