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Mott insulator superconductor transition, via pressure and no externaldoping, is studied in orbitally non degenerate spin-\half systems. It ispresented as another RVB route to high \tc superconductivity. We propose a`strong coupling' hypothesis which helps to view first order Mott transition asa self doping process that also preserves superexchange on metal side . Wepresent a generalized t-J model where a conserved $N_0$ doubly occupied ($e^-$)sites and $N_0$ empty sites ($e^+$) hop in the background of $N - 2 N_0$ singlysingly occupied (neutral) sites in a lattice of N sites. An equivalence to theregular t-J model is made and some old and new systems are predicted to becandidates for pressure induced high \tc superconductivity.Comment: 4 pages of LaTex file, 3 figures in eps file

physical review letters

Mott Insulator to High<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>Superconductor via Pressure: Resonating Valence Bond Theory and Prediction of New Systems

Mott Insulator to HighTcSuperconductor via Pressure: Resonating Valence Bond Theory and Prediction of New Systems