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Title: Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0,5 Ti0,5N Thin Films Induced by an External Magnetic Field

Abstract

We report the complex optical conductivity of a superconducting thin film of Nb{sub 0.5}Ti{sub 0.5}N in an external magnetic field. The field was applied parallel to the film surface and the conductivity extracted from far-infrared transmission and reflection measurements. The real part shows the superconducting gap, which we observe to be suppressed by the applied magnetic field. We compare our results with the pair-breaking theory of Abrikosov and Gor'kov and confirm directly the theory's validity for the optical conductivity.

Authors:
; ; ; ;
Publication Date:
Research Org.:
BROOKHAVEN NATIONAL LABORATORY (BNL)
Sponsoring Org.:
DOE - Office Of Science
OSTI Identifier:
1004987
Report Number(s):
BNL-94609-2011-JA
Journal ID: ISSN 0031-9007; PRLTAO; R&D Project: LS001; KC0401030; TRN: US1101072
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 25; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; MAGNETIC FIELDS; REFLECTION; THIN FILMS

Citation Formats

Xi, X., Carr, G., Hwang, J., Martin, C., and Tanner, D.B. Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0,5 Ti0,5N Thin Films Induced by an External Magnetic Field. United States: N. p., 2010. Web. doi:10.1103/PhysRevLett.105.257006.
Xi, X., Carr, G., Hwang, J., Martin, C., & Tanner, D.B. Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0,5 Ti0,5N Thin Films Induced by an External Magnetic Field. United States. doi:10.1103/PhysRevLett.105.257006.
Xi, X., Carr, G., Hwang, J., Martin, C., and Tanner, D.B. Thu . "Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0,5 Ti0,5N Thin Films Induced by an External Magnetic Field". United States. doi:10.1103/PhysRevLett.105.257006.
@article{osti_1004987,
title = {Far-Infrared Conductivity Measurements of Pair Breaking in Superconducting Nb0,5 Ti0,5N Thin Films Induced by an External Magnetic Field},
author = {Xi, X. and Carr, G. and Hwang, J. and Martin, C. and Tanner, D.B.},
abstractNote = {We report the complex optical conductivity of a superconducting thin film of Nb{sub 0.5}Ti{sub 0.5}N in an external magnetic field. The field was applied parallel to the film surface and the conductivity extracted from far-infrared transmission and reflection measurements. The real part shows the superconducting gap, which we observe to be suppressed by the applied magnetic field. We compare our results with the pair-breaking theory of Abrikosov and Gor'kov and confirm directly the theory's validity for the optical conductivity.},
doi = {10.1103/PhysRevLett.105.257006},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 25,
volume = 105,
place = {United States},
year = {2010},
month = {12}
}