2017/08/31 by Zhiqiang Wang, John Berlinsky, Gertrud Zwicknagl +1 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Electrical resistivity and conductivity #Hall effect #Lattice (music) #Physics #Physics of Superconductivity and Magnetism #Polar #Quantum mechanics #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.96.174511
published as Phys. Rev. B 96, 174511 (2017) · 17 pages including appendices,9 figures, replaced with the version accepted by Phys. Rev. B with minor reference corrections
openalex created_date 2017/09/15 · openalex publication_date 2017/11/16 · arxiv created 2017/11/17 · arxiv updated 2017/11/22 · openalex updated_date 2026/08/06
The polar Kerr effect, or equivalently the ac anomalous Hall effect, is a signature of time-reversal symmetry breaking in chiral superconductors. Seeing it requires additional ingredients, such as disorder or multiple bands. The simplest model of chiral superconductivity in UPt3, which is thought to be f wave, would not exhibit a Kerr effect. Here, it is shown that the ``starfish'' Fermi surface, where the bands stick together at the top and bottom of the Brillouin zone, can exhibit a Kerr effect due to multiband effects and to mixing of f- and d-wave order parameters that are respectively even and odd in the hcp sublattice index.