Fermi surface as the driving mechanism for helical antiferromagnetic ordering in Gd-Y alloys

Authors
Fretwell, HM Dugdale, SB Alam, MA Hedley, DCR Rodriguez-Gonzalez, A Palmer, SB
Citation
Hm. Fretwell et al., Fermi surface as the driving mechanism for helical antiferromagnetic ordering in Gd-Y alloys, PHYS REV L, 82(19), 1999, pp. 3867-3870
Citations number
21
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
19
Year of publication
1999
Pages
3867 - 3870
Database
ISI
SICI code
0031-9007(19990510)82:19<3867:FSATDM>2.0.ZU;2-G
Abstract
The first direct experimental evidence to suggest the Fermi surface (FS) as being responsible for driving the helical antiferromagnetic ordering in a gadolinium-yttrium alloy is reported. The presence of a FS sheet capable of nesting is revealed, and the nesting vector associated with the sheet is f ound to be in excellent agreement with the periodicity of the helical order ing.