Strongly Correlated Impurity Band Superconductivity in Diamond: X-ray Spectroscopic evidence for upper Hubbard and mid-gap bands

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dc.creatorBaskaran, G.
dc.date2004-10-12
dc.date.accessioned2026-07-07T03:01:26Z
dc.date.available2026-07-07T03:01:26Z
dc.descriptionIn a recent X-ray absorption study in boron doped diamond, Nakamura et al. have seen a well isolated narrow boron impurity band in non-superconducting samples and an additional narrow band at the chemical potential in a superconducting sample. We interpret the beautiful spectra as evidence for upper Hubbard band of a Mott insulating impurity band and an additional metallic `mid-gap band' of a conducting `self-doped' Mott insulator. This supports the basic framework of a recent theory of the present author of strongly correlated impurity band superconductivity (SCIBS) in a template of a wide-gap insulator, with no direct involvement of valence band states.
dc.description4 pages, LaTex, 3 figure files
dc.identifierhttps://arxiv.org/abs/cond-mat/0410296
dc.identifierhttp://arxiv.org/abs/cond-mat/0410296
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25053
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleStrongly Correlated Impurity Band Superconductivity in Diamond: X-ray Spectroscopic evidence for upper Hubbard and mid-gap bands
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