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

@article{Kawamura2017AnisotropicSG,
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},
year={2017},
volume={95},
pages={054506}
}
• Published 24 October 2016
• Physics
• 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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## References

SHOWING 1-5 OF 5 REFERENCES

### Theory of Superconductivity

IN two previous notes1, Prof. Max Born and I have shown that one can obtain a theory of superconductivity by taking account of the fact that the interaction of the electrons with the ionic lattice is

### We develop also a library for implementing the optimized tetrahedron method in an arbitrary program

• We release a patch to the Quantum ESPRESSO for using the tetrahedron method in the calculation of phonons