Anisotropy and strong-coupling effects on the collective mode spectrum of chiral superconductors: application to Sr2RuO4

Cited 0 time in webofscience Cited 0 time in scopus
236 Viewed 52 Downloaded
Title
Anisotropy and strong-coupling effects on the collective mode spectrum of chiral superconductors: application to Sr2RuO4
Author(s)
James A.Sauls; Hao Wu; Suk Bum Chung
Publication Date
2015-06
Journal
FRONTIERS IN PHYSICS, v.3, no., pp.36 -
Publisher
FRONTIERS RESEARCH FOUNDATION
Abstract
Recent theories of Sr2RuO4 based on the interplay of strong interactions, spin-orbit coupling and multi-band anisotropy predict chiral or helical ground states with strong anisotropy of the pairing states, with deep minima in the excitation gap, as well as strong phase anisotropy for the chiral ground state. We develop time-dependent mean field theory to calculate the Bosonic spectrum for the class of 2D chiral superconductors spanning 3He-A to chiral superconductors with strong anisotropy. Chiral superconductors support a pair of massive Bosonic excitations of the time-reversed pairs labeled by their parity under charge conjugation. These modes are degenerate for 2D 3He-A. Crystal field anisotropy lifts the degeneracy. Strong anisotropy also leads to low-lying Fermions, and thus to channels for the decay of the Bosonic modes. Selection rules and phase space considerations lead to large asymmetries in the lifetimes and hybridization of the Bosonic modes with the continuum of un-bound Fermion pairs. We also highlight results for the excitation of the Bosonic modes by microwave radiation that provide clear signatures of the Bosonic modes of an anisotropic chiral ground state. Copyright © 2015 Sauls,Wu and Chung.
URI
https://pr.ibs.re.kr/handle/8788114/2908
ISSN
2296-424X
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
Frontiers in Physics_3_36_2015.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse