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Fermi Surface as the Driving Mechanism for Helical Antiferromagnetic Ordering in Gd-Y Alloys

H. M. Fretwell·S. B. Dugdale·M. A. Alam·D. C. R. Hedley·A. Rodriguez-Gonzalez·S. B. Palmer
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Abstract

The first direct experimental evidence for the Fermi surface (FS) 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 found to be in excellent agreement with the periodicity of the helical ordering.

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H. M. Fretwell, S. B. Dugdale, M. A. Alam, D. C. R. Hedley, A. Rodriguez-Gonzalez, S. B. Palmer. 1998-09-03. Fermi Surface as the Driving Mechanism for Helical Antiferromagnetic Ordering in Gd-Y Alloys. https://doi.org/10.1103/physrevlett.82.3867

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