Staggered Pairing Phenomenology for UPd_2Al_3 and UNi_2Al_3

Details Staggered Pairing Phenomenology for UPd_2Al_3 and UNi_2Al_3 Staggered Pairing Phenomenology for UPd_2Al_3 and UNi_2Al_3

1997-06-24

arxiv.org/abs/cond-mat/9706245v1

Physics

Condensed Matter

Superconductivity

4 pages, REVTeX, 2 Postscript figures

Scientific paper

10.1103/PhysRevB.57.7466

We apply the staggered-pairing Ginzburg-Landau phenomenology to describe superconductivity in UPd_2Al_3 and UNi_2Al_3. The phenomenology was applied successfully to UPt_3 so it explains why these materials have qualitatively different superconducting phase diagrams although they have the same point-group symmetry. UPd_2Al_3 and UNi_2Al_3 have a two-component superconducting order parameter transforming as an H-point irreducible representation of the space group. Staggered superconductivity can induce charge-density waves characterized by new Bragg peaks suggesting experimental tests of the phenomenology.

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