Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-10-28
Physics
Condensed Matter
Strongly Correlated Electrons
REVTEX file, 10 pages, 3 figures. To appear in PLA
Scientific paper
10.1016/S0375-9601(98)00849-4
Using the Lanczos method we determine the phase diagram of the 2-leg
AF-Heisenberg ladder with alternating dimerization. It consists of a resonating
valence bond phase and a dimer phase separated by a critical line. Our results
are in good agreement with previous conjectures obtained with the non linear
sigma model.
Dukelsky Jorge
Martin-Delgado Miguel Angel
Sierra German
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