https://doi.org/10.1007/s100510050031
Spin-liquid state for two-dimensional Heisenberg antiferromagnets on a kagomé lattice
1
Department of Physics, Beijing Normal University, Beijing 100875, PR China
2
CCAST (World Laboratory) P.O. Box 8730, Beijing 100080, PR China
3
Department of Physics, Beijing Normal University, Beijing
100875, PR China
4
National Laboratory of Superconductivity, Academia Sinica, Beijing
100080, PR China
Received:
1
December
1998
Revised:
12
April
1999
Published online: 15 January 2000
The magnetic properties of the spin liquid state of the antiferromagnetic
Heisenberg model on the kagomé lattice are investigated within the
self-consistent mean-field theory. The results show that the spin
liquid ground-state energy per site is 
, which is in
very good agreement with the best numerical estimates. The spin
structure factor and spin susceptibility are also discussed.
PACS: 75.10.Jm – Quantized spin models / 67.40.Db – Quantum statistical theory; ground state, elementary excitations / 75.50.Ee – Antiferromagnetics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
