UNSPECIFIED. (2003) First-principles relativistic theory of the magnetic response of paramagnetic metals: Application to yttrium and scandium. PHYSICAL REVIEW B, 68 (13). -. ISSN 1098-0121

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Abstract

We describe a first-principles theoretical formalism for the magnetic response of paramagnetic metals in which all relativistic effects such as spin-orbit coupling are included. In particular, the easy axis and dependence upon wave vector q of the paramagnetic spin susceptibility chi(q) can be calculated. To illustrate we apply the method to two transition metals, yttrium and scandium. In each case we find chi(q) to peak at a wave vector q=(0,0,0.57)pi/c, coincident with a Fermi surface nesting vector, and to have an easy axis perpendicular to q. Since chi(q) plays a key role in determining the interaction between magnetic impurities in these metals, these results are consistent with the helical antiferromagnetic order found in many dilute rare-earth Y alloys. Conversely, the easy axis for the response to a uniform magnetic field, q=0, lies along the c axis.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW B
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	1098-0121
Date:	1 October 2003
Volume:	68
Number:	13
Number of Pages:	5
Page Range:	-
Identification Number:	10.1103/PhysRevB.68.134412
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/9142

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