首页> 外文期刊>Journal de Physique, IV: Proceedings of International Conference >Feshbach shape resonances in nanoscale multiband systems for high T-c superconductivity
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Feshbach shape resonances in nanoscale multiband systems for high T-c superconductivity

机译:纳米级多频带系统中的Feshbach形状共振可实现高T-c超导性

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摘要

We show that electron doped MgB2, made of it superlattice of boron honeycomb layers, is a multiband superconductor in the clean limit that provides the simplest high T, superconducting system (HTcS) called also the atomic hydrogen for S. The chemical potential has been tuned by atomic Substitution keeping the Superconductivity ill the clean limit. This is a two component electronic system made of a first Fermi gas in the pi subband that coexists with it second low density electron fluid in the sigma subband close the localization limit 5 < r(s) < 30. The Feshbach shape resonance of the interband exchange-like pairing term centered at the 2D to 3D Lifshitz electronic topological transition (2D/3D ETT) is shown to be the key term controlling the critical temperature in the range from 0.3 K to 40 K.
机译:我们证明,由电子掺杂的MgB2是由硼蜂窝层的超晶格制成的,它在清洁范围内是一种多带超导体,它提供了最简单的高T超导系统(HTcS),也称为S的原子氢。化学势已经过调节通过原子替代使超导性达到清洁极限。这是由pi子带中的第一费米气体与sigma子带中的第二低密度电子流体共存的两组分电子系统,其局域极限5

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