Intrinsic anisotropy of degree of transport spin polarization in typical ferromagnets
Intrinsic anisotropy of degree of transport spin polarization in typical ferromagnets
复制标题
典型铁磁体中输运自旋极化程度的本征各向异性
DOI:
10.1088/0953-8984/20/27/275245
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发表时间:
2008-07
期刊:
影响因子:
--
通讯作者:
中科院分区:
文献类型:
--
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A general approach is presented for investigation of the anisotropy of the degree of transport spin polarization (P) in ferromagnets both in the ballistic regime, P1,i, and in the diffusive regime, P2,i, as a function of crystal direction. The validity of this approach is confirmed by the benchmark calculation for the isotropic P. By this approach, we have investigated the anisotropy of P in bcc Fe, fcc Co, fcc Ni and hcp Co. For cubic structures, P1,i shows a small but appreciable anisotropy, due to the difference in the electronic orbital extension for spin-up and spin-down conduction bands. However, P2,i shows an isotropic feature for the cubic structure, as a result of the combination of its dependence on the square of electron velocity and the lattice symmetry. On the other hand, for hcp Co, both P1,i and P2,i show a very strong anisotropy. The large anisotropy of P1,i and P2,i in hcp Co is mainly attributed to the anisotropy of spin-down ballistic (diffusive) conductance.
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影响因子:
1.7
作者:
A. Yanase;K. Siratori
通讯作者:
A. Yanase;K. Siratori
影响因子:
8.6
作者:
P. Xu;K. Xia;M. Zwierzycki;M. Talanana;P. Kelly
通讯作者:
P. Xu;K. Xia;M. Zwierzycki;M. Talanana;P. Kelly
影响因子:
3.2
作者:
H. Jaffrès;A. Fert
通讯作者:
H. Jaffrès;A. Fert
DOI:
10.1146/annurev.ms.25.080195.002323
发表时间:
1995-08
期刊:
Annual Review of Materials Science
影响因子:
--
作者:
Peter D. Johnson
通讯作者:
Peter D. Johnson
影响因子:
3.7
作者:
P. B. Allen
通讯作者:
P. B. Allen