Nesting properties and anisotropy of the Fermi surface of LuNi$_{2}$B$_{2}$C

Details Nesting properties and anisotropy of the Fermi surface of LuNi$_{2}$B$_{2}$C Nesting properties and anisotropy of the Fermi surface of LuNi$_{2}$B$_{2}$C

1999-07-13

arxiv.org/abs/cond-mat/9907180v1

Physics

Condensed Matter

4 pages, 4 PS figures

Scientific paper

10.1103/PhysRevLett.83.4824

The rare earth nickel borocarbides, with the generic formula $R$Ni$_{2}$B$_{2}$C, have recently been shown to display a rich variety of phenomena. Most striking has been the competition between, and even coexistence of, antiferromagnetism and superconductivity. We have measured the Fermi surface (FS) of LuNi$_{2}$B$_{2}$C, and shown that it possesses nesting features capable of explaining some of the phenomena experimentally observed. In particular, it had previously been conjectured that a particular sheet of FS is responsible for the modulated magnetic structures manifest in some of the series. We report the first direct experimental observation of this sheet.

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