Spin Dynamics from Time-Dependent Spin-Density-Functional Theory

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Spin Dynamics from Time-Dependent Spin-Density-Functional Theory

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/7912

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Title: Spin Dynamics from Time-Dependent Spin-Density-Functional Theory
Author: Qian, Zhixin; Vignale, Giovanni, 1957-
Keywords: time-dependent spin-density-functional theory
Date: 2002-01-17
Publisher: American Physical Society
Citation: Phys. Rev. Lett. 88, 056404 (2002)
Abstract: We derive the spin-wave dynamics of a magnetic material from the time-dependent spin-density-functional theory in the linear response regime. The equation of motion for the magnetization includes, besides the static spin stiffness, a “Berry curvature” correction and a damping term. A gradient expansion scheme based on the homogeneous spin-polarized electron gas is proposed for the latter two quantities, and the first few coefficients of the expansion are calculated to second order in the Coulomb interaction.
URI: http://hdl.handle.net/10355/7912
ISSN: 1098-0121

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