Anisotropic superconducting gaps in YNi 2 B 2 C : A first-principles investigation

  title={Anisotropic superconducting gaps in YNi 2 B 2 C : A first-principles investigation},
  author={Mitsuaki Kawamura and R. Akashi and Shinji Tsuneyuki},
  journal={Physical Review B},
We calculate superconducting gaps and quasiparticle density of states of ${\mathrm{YNi}}_{2}{\mathrm{B}}_{2}\mathrm{C}$ in the framework of the density functional theory for superconductors to investigate the origin of highly anisotropic superconducting gaps in this material. Calculated phonon frequencies, the quasiparticle density of states, and the transition temperature show good agreement with experimental results. From our calculation of superconducting gaps and orbital character analysis… 
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