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Title: Incommensurate and commensurate antiferromagnetic spin fluctuations in cr and cr alloys from ab initio dynamical spin susceptibility calculations
Authors: J. B. Staunton
J. Poulter
B. Ginatempo
E. Bruno
D. D. Johnson
The University of Warwick
Mahidol University
Universita degli Studi di Messina
University of Illinois
Keywords: Physics and Astronomy
Issue Date: 1-Jan-1999
Citation: Physical Review Letters. Vol.82, No.16 (1999), 3340-3343
Abstract: A scheme for making ab initio calculations of the dynamic paramagnetic spin susceptibilities of solids at finite temperatures is described. It is based on time-dependent density functional theory and employs an electronic multiple scattering formalism. Incommensurate and commensurate antiferromagnetic spin fluctuations in paramagnetic Cr and compositionally disordered Cr95V5and Cr95Re5alloys are studied together with the connection with the nesting of their Fermi surfaces. We find that the spin fluctuations can be described rather simply in terms of an overdamped oscillator model. Good agreement with inelastic neutron scattering data is obtained. © 1999 The American Physical Society.
ISSN: 10797114
Appears in Collections:Scopus 1991-2000

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