Dynamic Jahn-Teller Mechanism of Superconductivity in MgB$_2$

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dc.creatorSon, Young-Woo
dc.creatorYu, Jaejun
dc.creatorIhm, Jisoon
dc.date2002-03-09
dc.date.accessioned2026-07-07T02:44:39Z
dc.date.available2026-07-07T02:44:39Z
dc.descriptionWe propose a novel mechanism of superconductivity in MgB$_2$ based on the dynamic electronic structure of the $pσ$-orbitals coupled with $e_{2g}$ phonons. A nonconventional superconducting state is found to arise frome lectron-phonon interactions in the presence of additional pairing channels made available by the dynamic Jahn-Teller effects. A partially broken pseudo-spin symmetry in this Jahn-Teller system, together with two-phonon exchange pairing, naturally gives rise to two distinct gaps both of which are basically isotropic in the ($k_x$, $k_y$) space. Important experimental observations including high $T_c$ and the anomalous specific heat are explained using this theory.
dc.identifierhttps://arxiv.org/abs/cond-mat/0203204
dc.identifierhttp://arxiv.org/abs/cond-mat/0203204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19016
dc.subjectSuperconductivity
dc.titleDynamic Jahn-Teller Mechanism of Superconductivity in MgB$_2$
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