High $T_c$ Phase Diagram based on the SU(2) Slave-Boson Approach to the t-J Hamiltonian

Details High $T_c$ Phase Diagram based on the SU(2) Slave-Boson Approach to the t-J Hamiltonian High $T_c$ Phase Diagram based on the SU(2) Slave-Boson Approach to the t-J Hamiltonian

1999-07-15

arxiv.org/abs/cond-mat/9907226v2

Physics

Condensed Matter

Superconductivity

4 pages, 1 figures

Scientific paper

Based on an improved SU(2) slave-boson approach to the t-J Hamiltonian, we derive a phase diagram of high $T_c$ cuprates which displays both the superconducting and pseudogap phases in the plane of temperature vs. hole doping rate. It is shown that the inclusion of phase fluctuations in the order parameters results in a closer agreement with the observed superconducting temperature(bose condensation line) of an arch shape as a function of hole doping rate.

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