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Lifting of nodes by disorder in extended-$$s$$-state superconductors: Application to ferropnictides

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [2];  [3];  [1];  [4]
  1. University of Florida, Gainesville, FL (United States)
  2. University of Florida, Gainesville, FL (United States); University of Augsburg (Germany)
  3. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  4. University of California, Santa Barbara, CA (United States)
+ Show Author Affiliations
We show, using a simple model, how ordinary disorder can gap an extended-s- (A1⁢g) symmetry superconducting state with nodes. The concomitant crossover of thermodynamic properties, particularly the T dependence of the superfluid density, from pure power-law behavior to an activated one is exhibited. We discuss applications of this scenario to experiments on the ferropnictide superconductors.
Research Organization:
University of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
FG02-05ER46236
OSTI ID:
2484114
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 9 Vol. 79; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY