Acoustic Plasmons in MgB2

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We present strong evidence for the existence of an acoustic plasmon mode, that is, a quadrupolar charge collective mode with linear dispersion, in MgB2. This mode may be responsible for the anomalously small value of the Coulomb pseudopotential required to explain the high superconducting transition temperature of 40K.
To be presented at the APS March meeting post deadline session on MgB2 Monday, March 12, 2001 in Seattle

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Superconductivity, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/17439

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0103082
 http://arxiv.org/abs/cond-mat/0103082

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arXiv