Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 2, Pages 300-303Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.300
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A consistent picture on the mean-field level of the magnetic properties and electronic structure: of the superconducting itinerant ferromagnet UGe2 requires inclusion of correlation effects beyond the local density approximation (LDA). The LDA + U approach reproduces both the magnitude of the observed moment and the: manetocrystalline anisatropy. The largest Fermi surface sheet is composed primarily of spin majority states with orbital projection m(l) = 0, suggesting a much simpler picture of the pairing than is possible for general strong spin-orbit coupled materials. The quasi-two-dimensional geometry of the Fermi surface supports the likelihood of magnetically mediated p-wave triplet pairing.
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