THEORETICAL STUDY OF THE GROUND-STATE PROPERTY OF THE TWO-DIMENSIONAL HEISENBERG ANTIFERROMAGNET ON A TRIANGULAR LATTICE
DONG ZHAN-HAI (董占海)a, FENG SHI-PING (冯世平)ab
a Department of Physics, Beijing Normal University,Beijing 100875, China; b State Key Laboratory of Superconductivity,Academia Sinica,Beijing 100080, China
Abstract Within the Tyablikov's theoretical framework, the ground-state property of the two-dimensional antiferromagnetic Heisenberg model on a triangular lattice is studied. Our results show that the sublattice magnetization is M=0.241 and the ground-state energy per bond is Eg/ NZJ =-0.166, which are in agreement with the numerical simulations.
Received: 04 April 1997
Accepted manuscript online:
PACS:
75.10.Jm
(Quantized spin models, including quantum spin frustration)
(Magnetization curves, hysteresis, Barkhausen and related effects)
Fund: Project supported by the National Natural Science Foundation of China and by the Trans-Century Training Programme Foundation for the Talents by the State Education Commission of China.
Cite this article:
DONG ZHAN-HAI (董占海), FENG SHI-PING (冯世平) THEORETICAL STUDY OF THE GROUND-STATE PROPERTY OF THE TWO-DIMENSIONAL HEISENBERG ANTIFERROMAGNET ON A TRIANGULAR LATTICE 1998 Acta Physica Sinica (Overseas Edition) 7 348
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