Staggered Superconductivity in UPt$_3$: A New Phenomenological Approach

Details Staggered Superconductivity in UPt$_3$: A New Phenomenological Approach Staggered Superconductivity in UPt$_3$: A New Phenomenological Approach

1994-08-18

arxiv.org/abs/cond-mat/9408052v1

Physics

Condensed Matter

12 pages, 3 postscript figures are appended as a uuencoded file, RevTeX 3.0

Scientific paper

10.1103/PhysRevLett.74.2571

We present a new Ginzburg-Landau theory for superconductivity in UPt$_3$, based upon a multicomponent order parameter transforming under an irreducible space group representation; the phase is staggered in real space. Our model can explain the $H-T-P$ phase diagram including the tetracritical point for all field directions. We motivate this unconventional superconducting state in terms of odd-in-time-reversal pairing that may arise in one- or two-channel Kondo models, and suggest experimental tests.

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