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  Rashba spin-orbit coupling effects in quasiparticle interference of non-centrosymmetric superconductors

Akbari, A., & Thalmeier, P. (2013). Rashba spin-orbit coupling effects in quasiparticle interference of non-centrosymmetric superconductors. Europhysics Letters, 102(5): 57008, pp. 57008-1-57008-6. doi:10.1209/0295-5075/102/57008.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1EAA-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1EAB-2
Genre: Journal Article

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 Creators:
Akbari, A.1, Author              
Thalmeier, P.2, Author              
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Peter Thalmeier, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863457              

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 Abstract: 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

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Language(s): eng - English
 Dates: 2013-06-06
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 668932
ISI: 000321122600028
DOI: 10.1209/0295-5075/102/57008
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Title: Europhysics Letters
Source Genre: Journal
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Pages: - Volume / Issue: 102 (5) Sequence Number: 57008 Start / End Page: 57008-1 - 57008-6 Identifier: ISSN: 0295-5075