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

Sung-Sik Lee; Sung-Ho Suck Salk

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

Sung-Sik Lee·Sung-Ho Suck Salk

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Abstract

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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Sung-Sik Lee, Sung-Ho Suck Salk. 2000-03-23. Importance of Coupling between the Charge and Spin Degrees of Freedom in High Tc Superconductivity. https://arxiv.org/abs/cond-mat/0003372

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