Hall conductivity in the normal and superconducting phases of the Rashba system with Zeeman field

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Title
Hall conductivity in the normal and superconducting phases of the Rashba system with Zeeman field
Author(s)
Suk Bum Chung; Rahul Roy
Publication Date
2014-12
Journal
PHYSICAL REVIEW B, v.90, no.22, pp.224510 -
Publisher
AMER PHYSICAL SOC
Abstract
We study the intrinsic Hall conductivity of the ordinary and topological superconducting phases of a Rashba metal in a perpendicular Zeeman eld. In this system the normal metal breaks time reversal symmetry while the superconducting order parameter does not, in contrast to the chiral p-wave superconducting state predicted in the monolayer strontium ruthenate (Sr2RuO4) whose Hall conductivity has been studied extensively. We study the eects of intra-band and inter-band pairing and nd there is qualitatively larger change in the intrinsic Hall conductivity when there is inter-band pairing, with the change in magnitude linear in the pairing gap. We argue that interband pairing leads in general to higher energy costs for the topological phase compared to the topologically trivial phase and thus that the qualitative behavior of the intrinsic Hall conductivity with superconductivity in these systems could provide important clues about the nature of pairing in the superconducting phase and even some hints of whether it is topological or not
URI
https://pr.ibs.re.kr/handle/8788114/850
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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