We investigate the ground state properties of the S=1/2 Heisenberg antiferromagnet on the triangular lattice using mainly exact diagonalization (for lattices up to N=36 sites) and the recently developed Green Function Monte Carlo with stochastic reconfiguration (up to N=144). A systematic size scaling of the order parameter and of the spin gap gives strong evidences for the presence of long-range Neel order in the ground state of this highly frustrated model. (C) 2000 American Institute of Physics. [S0021-8979(00)49808-7].

Ground state properties of the S=1/2 Heisenberg antiferromagnet on the triangular lattice

Sorella, Sandro
2000-01-01

Abstract

We investigate the ground state properties of the S=1/2 Heisenberg antiferromagnet on the triangular lattice using mainly exact diagonalization (for lattices up to N=36 sites) and the recently developed Green Function Monte Carlo with stochastic reconfiguration (up to N=144). A systematic size scaling of the order parameter and of the spin gap gives strong evidences for the presence of long-range Neel order in the ground state of this highly frustrated model. (C) 2000 American Institute of Physics. [S0021-8979(00)49808-7].
2000
87
9
7046
7048
Capriotti, L; Trumper, Ae; Sorella, Sandro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/16900
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