Journal
PHYSICAL REVIEW B
Volume 80, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.100506
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Funding
- U. S. DOE, Office of Science [DE-AC02-06CH11357]
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Group theory arguments have been invoked to argue that odd-parity order parameters cannot have line nodes in the presence of spin-orbit coupling. In this Rapid Communication we show that these arguments do not hold for certain nonsymmorphic superconductors. Specifically, we demonstrate that when the underlying crystal has a twofold screw axis, half of the odd-parity representations vanish on the Brillouin-zone face perpendicular to this axis. Many unconventional superconductors have nonsymmorphic space groups, and we discuss implications for several materials, including UPt3, UBe13, Li2Pt3B, and Na4Ir3O8.
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