Spinon-holon binding in t-J model
نویسنده
چکیده
Using a phenomenological model, we discuss the consequences of spinon-holon binding in the Us1d slaveboson approach to t-J model in the weak-coupling limit. We find that spinon-holon binding produces a pseudogap normal state with a segmented Fermi surface and the superconducting state is formed by opening an “additional” d-wave gap on the segmented Fermi surface. The d-wave gap merges with the pseudogap smoothly as temperature T→0. The quasiparticles in the superconducting state are coupled to external electromagnetic field with a coupling constant of order xg/2 sx=hole concentrationd, where 0øgø1.
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