Holon Pair Condensation and Phase Diagram of High T_c Cuprates

Abstract

A possibility of holon (boson) pair condensation is explored for hole doped high T_c cuprates, by using the U(1) slave-boson representation of the t-J Hamiltonian with the inclusion of hole-hole repulsion. A phase diagram of the hole doped high T_c cuprates is deduced by allowing both the holon pairing and spinon pairing. It is shown that the spin gap size remains nearly unchanged below the holon pair condensation temperature. We find that the s-wave holon pairing under the condition of d-wave singlet pairing is preferred, thus allowing d-wave hole pairing.

6 pages, 3 figures

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Cited by in corpus (6)

• Phase Separation Based on U(1) Slave-boson Functional Integral Approach to the t-J Model
• On the origin of the hump structure in the in-plane optical conductivity of high Tc cuprates based on a SU(2) slave-boson theory
• Studies of doping and temperature dependences of superfluid weight and spectral function; Universal scaling behavior of pseudogap
• On the Origin of Peak-dip-hump Structure in the In-plane Optical Conductivity of the High $T_C$ Cuprates; Role of Antiferromagnetic Spin Fluctuations of Short Range Order
• Insulator-metal transition and quasi-flat-band of Shastry-Sutherland lattice
• Cooper Pair Formation in U(1) Gauge Theory of High Temperature Superconductivity