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Article overview
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Superconducting pairing in Sr$_2$RuO$_4$ from weak to intermediate coupling | | Li-Da Zhang
; Wen Huang
; Fan Yang
; Hong Yao
; | | Date: |
29 Sep 2017 | | Abstract: | The unconventional superconductivity in Sr$_2$RuO$_4$ continues to attract
considerable interest. While many measurements can be interpreted on the basis
of chiral $p$-wave pairing, a number of notable exceptions hinder an
unambiguous verification of such an order. The pairing mechanism also remains
under debate. In this paper, with the effects of the sizable spin-orbit
coupling accounted for, we reexamine the superconducting instabilities in
Sr$_2$RuO$_4$ through systematic microscopic analysis within random phase
approximation. Our calculations show that the odd-parity $p$-wave pairing is
favored in the regime of extremely weak interactions, but that highly
anisotropic even-parity pairings become most leading over a broad range of
stronger interactions. These results could shed light on the nature of
enigmatic superconductivity in Sr$_2$RuO$_4$. | | Source: | arXiv, 1710.0010 | | Services: | Forum | Review | PDF | Favorites | |
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