Physics – Condensed Matter
Scientific paper
1997-11-02
published in Phys. Rev. B57, 11439 (1998)
Physics
Condensed Matter
8 figures
Scientific paper
10.1103/PhysRevB.57.11439
The Heisenberg model on a 2-chain spin-1/2 ladder with frustrating second
neighbor interactions is studied by using series expansions about the Ising and
dimer limits, numerical diagonalization, and by Abelian bosonization analysis.
The phase diagram is determined, and pair correlations and the complete
dispersion relations for the triplet spin-wave excitations are also computed.
Kotov Valeri
Oitmaa Jaan
Weihong Zheng
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