Physics of the Pseudogap Phase of High Tc Cuprates, or, RVB Meets Umklapp

Physics – Condensed Matter – Superconductivity

Scientific paper

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3 pages, 2 postscript figures included separately

Scientific paper

10.1016/S0022-3697(02)00247-0

It is argued that the dominant feature of the phase diagram of the high $T_c$ cuprates is the crossover to the pseudogap phase in the energy (temperature) region $E (T^*)$. We argue that this scale is determined by the effective antiferromagnetic interaction which we calculate to be $J_{eff} = J_{\rm superexchange} - xt$ where $x$ is the hole percentage and $t$ the hopping integral.

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