Superconductivity from emerging magnetic moments
- Hoshino, Shintaro Department of Basic Science, The University of Tokyo, Meguro, Tokyo, Japan - Department of Physics, University of Fribourg, Switzerland
- Werner, Philipp Department of Physics, University of Fribourg, Switzerland
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08.12.2015
Published in:
- Physical Review Letters. - 2015, vol. 115, no. 24, p. 247001
English
Multiorbital Hubbard models are shown to exhibit a spatially isotropic spin-triplet superconducting phase, where equal-spin electrons in different local orbitals are paired. This superconducting state is stabilized in the spin-freezing crossover regime, where local moments emerge in the metal phase, and the pairing is substantially assisted by spin anisotropy. The phase diagram features a superconducting dome below a non-Fermi-liquid metallic region and next to a magnetically ordered phase. We suggest that this type of fluctuating-moment-induced superconductivity, which is not originating from fluctuations near a quantum critical point, may be realized in spin-triplet superconductors such as strontium ruthenates and uranium compounds.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 258462
- DOI 10.1103/PhysRevLett.115.247001
- Persistent URL
- https://folia.unifr.ch/unifr/documents/304693
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