Frozen Quasi Long Range Order in Random Anisotropy Heisenberg Magnet

Details Frozen Quasi Long Range Order in Random Anisotropy Heisenberg Magnet Frozen Quasi Long Range Order in Random Anisotropy Heisenberg Magnet

2003-03-26

arxiv.org/abs/cond-mat/0303552v4

Phys. Rev. B 68, 100405(R) (2003)

Physics

Condensed Matter

Disordered Systems and Neural Networks

v1: Submitted to PRB. Revtex4, 5 pages, 9 figures. v2: title changed. fixed wrong sign in the definition of \eta v3: Conclusio

Scientific paper

10.1103/PhysRevB.68.100405

Extensive Monte Carlo simulations are used to investigate the low-temperature properties of the random anisotropy Heisenberg model, which describes the magnetic behavior of amorphous rare-earth-transition metal alloy. We show that the low-temperature phase in weak-anisotropy region is characterized by a {\it frozen-in} power-law spin-spin correlation. Numerical observation of the power-law exponent $\eta$ indicates nonuniversal behavior.

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