Spiral spin-density-wave ground state of γ-Fe calculated with spin stiffness correction to the local-spin-density approximation

被引：16

作者：

Bylander, DM ^{[1
]}

Kleinman, L ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.60.R9916

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Our recently derived spin stiffness correction to the local-density approximation has enabled us to calculate spiral (S) spin-density wave (SDW) vs wave-vector curves for gamma-Fe in significantly better agreement with experiment than heretofore possible. This enabled us to come to two conclusions: (i) The neutron-scattering peak at q = (2 pi/a)(1,0,0) is due to a local minimum in the energy and not an artifact arising from the overlap of the tails of nearby peaks. (ii) Neutron scattering cannot distinguish between a SSDW acid multiple SDW's polarized in different transverse directions. We confirm that the ground state of gamma-Fe is a SSDW. [S0163-1829(99)50138-0].

引用

页码：R9916 / R9918

页数：3

共 7 条

[1] Full-potential generalized gradient approximation calculations of spiral spin-density waves in γ-Fe [J].