Titlebook: Cooperative Dynamics in Complex Physical Systems; Proceedings of the S Hajime Takayama Conference proceedings 1989 Springer-Verlag Berlin H

不滿分子

Tom Wellsnsional Heisenberg triangular lattice antiferromagnet (2DH TAL-AF). One of the characteristic features of this frustrated system with continuous spin symmetry is that it undergoes a new type of phase transition at T.=0.66JS. driven by the pairing of the topological point defects known as Z. vorticie

賞錢

雪白

bonnet

Postulate

偏見

Control-Group

sts or not in the ground state of the quantum antiferromagnet on the square lattice. In the present contribution we treat the . model, . and derive the parameter region in which long-range order certainly exists. We also show that long-range order along the non-principal axis (e.g. .-axis in the .-l

Projection

Successive Magnetic Ordering in a Triangular Lattice Antiferromagnet CsNiCl3 to be disordered (component disorder model), as has been supported by subsequent neutron diffraction measurements [2]. However, a recent ESR experiment has shown that the model should be improved to include a dynamical character. In order to get more understanding, we have performed a detailed NMR

斷斷續(xù)續(xù)

Evidence for Z2-Vortex Excitations in the Quasi-Two-Dimensional Triangular Lattice Antiferromagnets he first time, that the electron paramagnetic resonance (EPR) experiments can be used to extract valuable information about Z. vortex under some reasonable assumptions and provide experimental evidence for the existence of Z. vortex excitations in the highly 2D ordered temperature region of the quas

小步走路

Soliton Dynamics in Impure Ising-like Antiferromagnetic Chainsd T.=9K. Short range order is well developed above T., and, in the intermediate phase (T.T. has been shown by the experiments of ESR [2] and neutron scattering [3].