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cond-mat.str-el1998
Study of Harper's Equation for the 2-D Systems of Antiferromagnetically Correlated Electrons in an External Magnetic Field
Seung-Pyo Hong, Hyeonjin Doh, Sung-Ho Suck Salk
Considering interacting (antiferromagnetically correlated) electrons, we derive a generalized Harper's equation for the square lattice of infinite size. We obtain an analytic expre…
cond-mat.str-el1998
Quasiparticle Energy Dispersion and Shadow Peaks in a Doped SO(5) Symmetric Ladder
Seung-Pyo Hong, Sung-Ho Suck Salk
Mean field and exact diagonalization studies on the quasiparticle excitation of an SO(5) symmetric two-leg ladder system are reported. It is shown that the energy gap in the quasip…
cond-mat.supr-con1998
Study of Holon Pair Condensation Based on the U(1) Slave Boson Approach to a Modified t-J Hamiltonian
Sung-Sik Lee, Sung-Ho Suck Salk
In order to obtain a reasonable phase diagram involving hole-pair condensation for hole-doped cuprate systems, we propose a modified t-J Hamiltonian in which a Coulomb repulsion te…