Fermi-surface topology and helical antiferromagnetism in heavy lanthanide metals

Detailed angle-resolved photoemission studies of Tb and Dy metal in the paramagnetic phase provide direct experimental proof of the presence of nesting features in the Fermi surfaces (FS) of these heavy lanthanide (Ln) metals. The observations clearly support the hypothesis that nesting of the FS in...

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Veröffentlicht in:	Physical review letters 2010-06, Vol.104 (24), p.246401-246401, Article 246401
Hauptverfasser:	Döbrich, K M, Bostwick, A, McChesney, J L, Rossnagel, K, Rotenberg, E, Kaindl, G
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creator	Döbrich, K M Bostwick, A McChesney, J L Rossnagel, K Rotenberg, E Kaindl, G
description	Detailed angle-resolved photoemission studies of Tb and Dy metal in the paramagnetic phase provide direct experimental proof of the presence of nesting features in the Fermi surfaces (FS) of these heavy lanthanide (Ln) metals. The observations clearly support the hypothesis that nesting of the FS in the paramagnetic phase is responsible for the development of helical antiferromagnetic ordering in heavy Ln metals. They also show that magnetic exchange splitting of the electronic states is responsible for the disappearance of FS nesting in the ferromagnetic phases.
doi_str_mv	10.1103/PhysRevLett.104.246401
format	Article
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title	Fermi-surface topology and helical antiferromagnetism in heavy lanthanide metals
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