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Longitudinal Spin Fluctuations and Superconductivity in Ferromagnetic ZrZn2 from Ab Initio Calculations

Published inPhysical review letters, vol. 87, no. 24, 247004
Publication date2001
Abstract

The recent discovery of superconductivity coexisting with weak itinerant ferromagnetism in the d-electron intermetallic compound ZrZn2 strongly suggests spin-fluctuation mediated superconductivity. Ab initio electronic structure calculations of the Fermi surface and generalized susceptibilities are performed to investigate the viability of longitudinal spin-fluctuation-induced spin-triplet superconductivity in the ferromagnetic state. The critical temperature is estimated to be of the order of 1 K. Additionally, it is shown that in spite of a strong electron-phonon coupling, conventional s-wave superconductivity is inhibited by the presence of strong spin fluctuations.

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SANTI, Gilles, DUGDALE, Stephen, JARLBORG, Thomas N. Longitudinal Spin Fluctuations and Superconductivity in Ferromagnetic ZrZn<sub>2</sub> from Ab Initio Calculations. In: Physical review letters, 2001, vol. 87, n° 24, p. 247004. doi: 10.1103/PhysRevLett.87.247004
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ISSN of the journal0031-9007
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