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



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ID: 670428.0, MPI für Chemische Physik fester Stoffe / publications 2013
Multiorbital and hybridization effects in the quasiparticle interference of the triplet superconductor Sr2RuO4
Authors:Akbari, A.; Thalmeier, P.
Language:English
Date of Publication (YYYY-MM-DD):2013-10-28
Title of Journal:Physical Review B
Volume:88
Issue / Number:13
Start Page:134519-1
End Page:134519-8
Sequence Number of Article:134519
Review Status:not specified
Audience:Not Specified
Abstract / Description: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.
External Publication Status:published
Document Type:Article
Communicated by:Ina Werner
Affiliations:MPI für chemische Physik fester Stoffe
Identifiers:ISI:000326159000002 [ID No:1]
ISSN:1098-0121 [ID No:2]
DOI:10.1103/PhysRevB.88.134519
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