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Superconductivity from Emerging Magnetic Moments

Shintaro Hoshino, Philipp Werner

DOI 10.1103/PhysRevLett.115.247001 · Physical Review Letters

T1

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Abstract

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.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Sr2RuO4

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—Pressure not reportedunknown
LiFeAs

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—Pressure not reportedunknown
UGe2

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—Pressure not reportedunknown
UCoGe

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—Pressure not reportedunknown
URhGe

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—Pressure not reportedunknown

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