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Resonating Valence Bond Theory of Superconductivity for Dopant Carriers: Application to the Cobaltates

Alvaro Ferraz·Evgueny Kochetov·Marcin Mierzejewski
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Abstract

Within the $t$--$J$ model Hamiltonian we present a RVB mean field theory directly in terms of dopant particles. We apply this theory to $\mathrm{Na}_{x}\mathrm{CoO_{2}}\cdot y% \mathrm{H_{2}0}$ and show that the resulting phase diagram $T_c$ versus doping is in qualitative agreement with the experimental results.

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Alvaro Ferraz, Evgueny Kochetov, Marcin Mierzejewski. 2006-03-13. Resonating Valence Bond Theory of Superconductivity for Dopant Carriers: Application to the Cobaltates. https://doi.org/10.1103/physrevb.73.064516

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