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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3124
DTSTART:20131216T223000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T212207Z
LAST-MODIFIED:20131210T183725Z
LOCATION:Chamberin 5310
SUMMARY:The effect of magnetic order on the superconducting gap in the
  co-existence phase of Fe-pnictides\, Condensed Matter Theory Group Se
 minar\, Alberto Hinojosa Alvarado\, Physics Department
DESCRIPTION:We study the structure and symmetry of the superconducting
  gap in the presence of spin density wave (SDW) order in iron-based su
 perconductors. We specifically consider co-existing SDW and supercondu
 cting orders in a model with circular hole pockets and elliptic electr
 onic pockets. We show that SDW order generally induces a spin-triplet 
 component of the gap\, in addition to the conventional spin singlet. W
 e further show that\, in some range of temperatures below Tc\, the pha
 ses of superconducting order parameters on different reconstructed Fer
 mi surfaces differ by an amount other than 0 or pi\, i.e.\, supercondu
 ctivity directly reflects the breaking of time-reversal symmetry by SD
 W order.
URL:https://www.physics.wisc.edu/events/?id=3124
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