Electromagnetic response of high-T_c superconductors: Slave-boson and doped-carrier theories

摘要

We evaluate the doping dependence of the quasiparticle current and low-temperature superfluid density in two slave-particle theories of the tt't″ model-the slave-boson theory and doped-carrier theory. In the slave-boson theory, the nodal quasiparticle. cu