Abstract:

Resonating valence bond theory of high Tc superconductivity
was proposed nearly 2 decades ago, to explain superconductivity in
cuprates. There has been very many significant developments in the
theory front. What is not well known is that there are signals from
other systems for the validity and relevance of RVB mechanism and
theory. The world of superconductors seems to have a subset, where
RVB mechanism of superconductivity is at work. I will briefly
discuss new systems that have appeared in the scene:
Boron doped Diamond, Icy-sodium cobalt oxide, Nickel borocarbides,
Fullerides, organic superconductors, intercalated graphite.