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Probing the pairing symmetry of the iron pnictides with electronic Raman scattering

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1];  [1];  [3]
  1. University of Florida, Gainesville, FL (United States)
  2. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford University, CA (United States)
  3. University of California, Santa Barbara, CA (United States)
+ Show Author Affiliations
An important issue in the study of the iron-arsenic-based superconductors is the symmetry of the superconducting gap, a problem complicated by multiple gaps on different Fermi-surface sheets. Furthermore, electronic Raman scattering is a flexible bulk probe which allows one in principle to determine gap magnitudes and test for gap nodes in different regions of the Brillouin zone by employing different photon polarization states. Here we calculate the clean Raman intensity for A1⁢g, B1⁢g, and B2⁢g polarizations and discuss the peak structures and low-energy power laws which might be expected for several popular models of the superconducting gap in these systems.
Research Organization:
University of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; FG02-05ER46236
OSTI ID:
2484116
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 17 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