From E2g to other modes : Effects of pressure on electron-phonon interaction in MgB2
Abstract
We study the effects of pressure on the electron-phonon interaction in MgB2 using density-functional-based methods. Our results show that the superconductivity in MgB2 vanishes by 100 GPa, and then reappears at higher pressures. In particular, we find a superconducting transition temperature Tc \~ 2 K for mu*=0.1 at a pressure of 137 GPa.
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