200 citations · 1k across the 30 of their papers we have counts for
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cond-mat.str-el1999
Mixed Phases for the t-J Model
Elisa Ercolessi, Giuseppe Morandi, Leonardo Pisani +1
We study the competition between non-magnetic (dimer or flux) states and short-range antiferromagnetically ordered RVB states in the t-J model and present a finite temperature phas…
cond-mat.str-el1999★ 8 cited
Spin Chains in an External Magnetic Field. Closure of the Haldane Gap and Effective Field Theories
L. Campos Venuti, E. Ercolessi, G. Morandi +2
We investigate both numerically and analytically the behaviour of a spin-1 antiferromagnetic (AFM) isotropic Heisenberg chain in an external magnetic field. Extensive DMRG studies…