University of Birmingham > Talks@bham > Condensed Matter Physics Seminars > Fermi surface of the noncentrosymmetric superconductor BiPd

Fermi surface of the noncentrosymmetric superconductor BiPd

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  • UserDr. Ed Yelland, Scottish Universities Physics Alliance
  • ClockFriday 05 September 2014, 14:00-15:00
  • HousePhysics East 217.

If you have a question about this talk, please contact Elizabeth Blackburn.

We report Fermi surface measurements of the noncentrosymmetric superconductor BiPd via quantum oscillations in the magnetic torque. The results show that BiPd is a high carrier density metal with both quasi two-dimensional and three-dimensional Fermi surface sheets. Comparison of the measured Fermi surface to that calculated by density functional theory reveals that spin-orbit interaction both splits the bulk electronic states and induces a topological change in some Fermi surface sheets. The measured quasiparticle masses in the range 0:2−1:5 electron masses are renormalized by a factor ~2 compared to bare values, suggesting fairly strong electron-phonon coupling. The presence of symmetry-enforced degeneracies of the electronic bands is highlighted and we note their implications for the spin-structure of the spin-orbit-split states and for the symmetry of the superconducting order parameter.

This talk is part of the Condensed Matter Physics Seminars series.

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