English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
 Local TagsRelease HistoryDetailsSummary
  Quasiparticle interference in multiband superconductors with strong coupling

Dutt, A., Golubov, A., Dolgov, O., & Efremov, D. (2017). Quasiparticle interference in multiband superconductors with strong coupling. Physical Review B, 96(5): 054513.

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://hdl.handle.net/21.11116/0000-000E-CFAA-A Version Permalink: https://hdl.handle.net/21.11116/0000-000E-CFAB-9
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Dutt, A., Author
Golubov, A., Author
Dolgov, O.1, Author
Efremov, D., Author
Affiliations:
1Max Planck Society, ou_persistent13              

Content

show
hide
Free keywords: -
 Abstract: We develop a theory of the quasiparticle interference (QPI) in multiband superconductors based on the strong-coupling Eliashberg approach within the Born approximation. In the framework of this theory, we study dependencies of the QPI response function in the multiband superconductors with the nodeless s-wave superconductive order parameter. We pay special attention to the difference in the quasiparticle scattering between the bands having the same and opposite signs of the order parameter. We show that at the momentum values close to the momentum transfer between two bands, the energy dependence of the quasiparticle interference response function has three singularities. Two of these correspond to the values of the gap functions and the third one depends on both the gaps and the transfer momentum. We argue that only the singularity near the smallest band gap may be used as a universal tool to distinguish between the s(++) and s(+/-) order parameters. The robustness of the sign of the response function peak near the smaller gap value, irrespective of the change in parameters, in both the symmetry cases is a promising feature that can be harnessed experimentally.

Details

show
hide
Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 735027
ISI: 000407711300004
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 96 (5) Sequence Number: 054513 Start / End Page: - Identifier: ISSN: 2469-9950