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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2013     Display Documents



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ID: 668932.0, MPI für Chemische Physik fester Stoffe / publications 2013
Rashba spin-orbit coupling effects in quasiparticle interference of non-centrosymmetric superconductors
Authors:Akbari, A.; Thalmeier, P.
Language:English
Date of Publication (YYYY-MM-DD):2013-06-06
Title of Journal:Europhysics Letters
Volume:102
Issue / Number:5
Start Page:57008-1
End Page:57008-6
Sequence Number of Article:57008
Review Status:not specified
Audience:Not Specified
Abstract / Description:The theory of quasiparticle interference (QPI) for non-centrosymmetric (NCS) superconductors with Rashba spin-orbit coupling is developed using the T -matrix theory in Born approximation. We show that qualitatively new effects in the QPI pattern originate from the Rashba spin-orbit coupling: The resulting spin coherence factors lead to a distinct difference of charge-and spin-QPI and to an induced spin anisotropy in the latter even for isotropic magnetic impurity scattering. In particular a cross-QPI appears describing the spin oscillation pattern due to non-magnetic impurity scattering which is directly related to the Rashba vector. We apply our theory to a 2D model for the NCS heavy fermion unconventional superconductor CePt3Si and discuss the new QPI features for a gap model with accidental node lines due to its composite singlet-triplet nature. Copyright (C) EPLA, 2013
External Publication Status:published
Document Type:Article
Communicated by:Ina Werner
Affiliations:MPI für chemische Physik fester Stoffe
Identifiers:ISI:000321122600028 [ID No:1]
ISSN:0295-5075 [ID No:2]
DOI:10.1209/0295-5075/102/57008
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