Series-expansion studies of the t-J two-leg ladder
نویسندگان
چکیده
Series expansions at T50 are used to study properties of the half-filled t-J ladder doped with one or two holes, and at quarter filling. Dispersion curves are obtained for one-hole symmetric and antisymmetric ~bonding and antibonding! excitations and for the two-hole bound state. The line in the phase diagram that separates bound and unbound states is determined. For quarter filling we compute the ground-state energy and estimate the location of the phase separation line. Comparisons with other numerical and analytical results are presented. @S0163-1829~99!06447-4#
منابع مشابه
1 9 Se p 19 99 Studies of the t - J two - leg ladder via series expansions
Studies of the t-J two-leg ladder via series expansions Abstract Series expansions at T = 0 are used to study properties of the half-filled t-J ladder doped with one or two holes, and at quarter filling. Dispersion curves are obtained for one-hole symmetric and antisymmetric (bonding and antibonding) excitations and for the two-hole bound state. The line in the phase diagram which separates bou...
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Studies of the t-J two-leg ladder via series expansions Abstract Series expansions at T = 0 are used to study properties of the half-filled t-J ladder doped with one or two holes, and at quarter filling. Dispersion curves are obtained for one-hole symmetric and antisymmetric (bonding and antibonding) excitations and for the two-hole bound state. The line in the phase diagram that separates boun...
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