Spin Polarization in the Anderson Model

Spin Polarization in the Anderson Model
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安德森模型中的自旋极化

DOI:
10.1143/ptp.55.1373
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发表时间:
1976
期刊:
影响因子:
--
通讯作者:
H. Ishii
H. Ishii
中科院分区:
--
文献类型:
--
作者:
H. Ishii

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根据Yamada-Yosida理论,在Anderson模型中研究了场致传导电子的自旋极化。在电子空穴对称的情况下,对于r>ro=4r:Ef‘Xven/KF(gfJ.B)2,在距杂质r的距离r处的自旋极化用(xH/gfJ.B)cos 2kFr/4r:R3表示,其中’xcven表示磁化率X相对于电子相关U的偶数部分。
Field-induced conduction electron spin polarization is investigated in the Anderson model on the basis of the Yamada-Yosida theory. In the case of elecron hole symmetry the spin polarization at a distance r from an impurity is expressed by (xH/gfJ.B) cos 2kFr/4r:r3 for r>ro =4r:EF 'Xeven/ kF (gfJ.B) 2, where 'Xcven denotes the even part of the susceptibility X with respect to electron correlation U. On the same lines, the interaction energy between two impurities is calculated.