Real‐space spin‐polarized first‐principles calculations of an Fe impurity in a Cu host
作者:
Jaime Duarte,
Sonia Frota‐Pessoˆa,
期刊:
Journal of Applied Physics
(AIP Available online 1991)
卷期:
Volume 70,
issue 10
页码: 6568-6570
ISSN:0021-8979
年代: 1991
DOI:10.1063/1.349859
出版商: AIP
数据来源: AIP
摘要:
A scheme, based on the linear muffin‐tin orbital (LMTO) formalism in the atomic sphere approximation (ASA) and on the recursion method, has been developed which allows first‐principles, spin‐polarized, self‐consistent, density‐functional calculations to be performed in real space. The scheme has been tested with success in ferromagnetic FeNi3and in antiferromagnetic FeMn. Here a substitutional impurity of Fe in a Cu host is considered. The first‐principles LMTO‐ASA real‐space approach is used to obtain the electronic structure and local magnetic moments of atoms in a region including four shells of Cu atoms around the impurity. The results for the magnetic moment and local density of states at the Fe site agree well withabinitioKKR–Green’s‐function results in the literature. The first‐principles real‐space approach is extremely flexible and can be applied to investigate interactions between impurities in a nonmagnetic host or between magnetic layers separated by nonmagnetic regions. It can also handle, without extra effort, lattice relaxation around the impurities.
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