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  Multiorbital and hybridization effects in the quasiparticle interference of the triplet superconductor Sr2RuO4

Akbari, A., & Thalmeier, P. (2013). Multiorbital and hybridization effects in the quasiparticle interference of the triplet superconductor Sr2RuO4. Physical Review B, 88(13): 134519, pp. 134519-1-134519-8. doi:10.1103/PhysRevB.88.134519.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E30-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E31-0
Genre: Journal Article

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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 tetragonal compound Sr2RuO4 exhibits a chiral p-wave superconducting (SC) state of its three t(2g)-type conduction bands. The characteristics of unconventional gap structure are known from experiment, in particular field-angle-resolved specific-heat measurements and from microscopic theories. A rotated extremal structure on the main active SC band with respect to the nodal gaps on the passive bands was concluded. We propose that this gap structure can be further specified by applying the scanning tunneling microscopy quasiparticle interference (QPI) method. We calculate the QPI spectrum within a three-band and chiral three-gap model and give closed analytical expressions. We show that as a function of bias voltage, the chiral three-gap model will lead to characteristic changes in QPI that may be identified and may be used for a more quantitative gap determination of the chiral gap structure.

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Language(s): eng - English
 Dates: 2013-10-28
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 670428
ISI: 000326159000002
DOI: 10.1103/PhysRevB.88.134519
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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 88 (13) Sequence Number: 134519 Start / End Page: 134519-1 - 134519-8 Identifier: ISSN: 1098-0121