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arXiv · 0907.0753

Odd Parity and Line Nodes in Non-Symmorphic Superconductors

T. Micklitz·M. R. Norman
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Abstract

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 paper we show that these arguments do not hold for certain non-symmorphic 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 non-symmorphic space groups, and we discuss implications for several materials, including UPt3, UBe13, Li2Pt3B and Na4Ir3O8.

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T. Micklitz, M. R. Norman. 2009-07-04. Odd Parity and Line Nodes in Non-Symmorphic Superconductors. https://doi.org/10.1103/physrevb.80.100506

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