Prediction of Superconductivity at ~ 30 K in Compressed Body-Centered Cubic Yttrium

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Using ab initio methods, we have studied the electron-phonon interaction in compressed, body-centered cubic (bcc) yttrium, which is predicted to be stable at 280 GPa [Melsen et al, Phys. Rev. B 48, 15574 (1993)]. We find that compressed, bcc yttrium has a large electron-phonon coupling with lambda=1.8, leading to a superconducting transition temperature T_c ~ 30 K or above. Our results indicate that the large electron-phonon coupling is due to the lattice hardening.
Added linear-response done using full-potential, LMTO method

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Superconductivity, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/113473

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0607588
 http://arxiv.org/abs/cond-mat/0607588

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arXiv