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

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Published in Physical Review Letters. 2001, vol. 87, no. 24, p. 247004
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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Research group Groupe Giamarchi
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SANTI, Gilles, DUGDALE, Stephen, JARLBORG, Thomas N. Longitudinal Spin Fluctuations and Superconductivity in Ferromagnetic ZrZn2 from Ab Initio Calculations. In: Physical Review Letters, 2001, vol. 87, n° 24, p. 247004. https://archive-ouverte.unige.ch/unige:35633

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Deposited on : 2014-04-14

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