Importance of Coupling between the Charge and Spin Degrees of Freedom in High Tc Superconductivity

Details Importance of Coupling between the Charge and Spin Degrees of Freedom in High Tc Superconductivity Importance of Coupling between the Charge and Spin Degrees of Freedom in High Tc Superconductivity

2000-03-23

arxiv.org/abs/cond-mat/0003372v1

Physics

Condensed Matter

Superconductivity

5 pages and 2 figures

Scientific paper

Based on an improved SU(2) slave-boson approach showing coupling between the cha rge and spin degrees of freedom, we derive a phase diagram of high $T_c$ cuprate s which displays both the superconducting and pseudogap phases in the plane of t emperature vs. hole doping rate. It is shown that phase fluctuations in the order parameters results in a closer agreement with the observed phase diagram of an arch shape, by manifesting the p resence of an optimal doping rate.

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