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VOLUME 56 (1992) | ISSUE 9 | PAGE 470
On the spin-wave spectrum of s = 1/2 triangular lattice Heisenberg antiferromagnet
The ground state and spin excitations for Heisenberg antiferomagnet on triangular lattice with nearest and next-nearest interactions are investigated. Ground state has long range order and becomes unstable near Ji/J\ — 2/15. The possibility of spinliquid state is discussed.