English

RVB Contribution to Superconductivity in $MgB_2$

Strongly Correlated Electrons 2009-11-07 v2 Superconductivity

Abstract

We view MgB2MgB_2 as electronically equivalent to (non-staggered) graphite (BB^- layer) that has undergone a zero gap semiconductor to a superconductor phase transition by a large c-axis (chemical) pressure due to Mg++Mg^{++} layers. Further, like the \ppi bonded planar organic molecules, graphite is an old resonating valence bond (RVB) system. The RVB's are the `preexisting cooper pairs' in the `parental' zero gap semiconducting BB^- (graphite) sheets that manifests themselves as a superconducting ground state of the transformed metal. Some consequences are pointed out.

Keywords

Cite

@article{arxiv.cond-mat/0103308,
  title  = {RVB Contribution to Superconductivity in $MgB_2$},
  author = {G. Baskaran},
  journal= {arXiv preprint arXiv:cond-mat/0103308},
  year   = {2009}
}

Comments

4 pages, 2 figure, RevTex. Based on a talk given at the Institute Seminar Week, IMSc, Madras (12-16, Feb. 2001)

R2 v1 2026-07-22T10:18:17.474Z