From E_{2g} to other modes : Effects of pressure on electron-phonon interaction in MgB_2

Prabhakar P. Singh

doi:10.1103/PhysRevLett.97.247002

From E_{2g} to other modes : Effects of pressure on electron-phonon interaction in MgB_2

Superconductivity 2009-11-11 v2 Materials Science

Authors: Prabhakar P. Singh

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Abstract

We study the effects of pressure on the electron-phonon interaction in MgB_2 using density-functional-based methods. Our results show that the superconductivity in MgB_2 vanishes by 100 GPa, and then reappears at higher pressures. In particular, we find a superconducting transition temperature T_c \~ 2 K for mu*=0.1 at a pressure of 137 GPa.

Keywords

MgB2 electron-phonon interaction pressure effects superconductivity density functional theory phonon modes

Cite

@article{arxiv.cond-mat/0608589,
  title  = {From E_{2g} to other modes : Effects of pressure on electron-phonon interaction in MgB_2},
  author = {Prabhakar P. Singh},
  journal= {arXiv preprint arXiv:cond-mat/0608589},
  year   = {2009}
}

Comments

4 pages, 6 figures; one figure and discussion on phonon softening added

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