منابع مشابه
Heisenberg Antiferromagnet
The Heisenberg model is described. Some of the interesting behavior of Heisenberg antiferromagnets and its behavior as a function of dimension is described. One dimensional systems have no long range order, two dimensional systems order magnetically only at zero temperature, and three dimensional systems have a non-zero critical temperature. Assembling lower dimensional pieces into ladders and ...
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The results of a detailed histogram Monte-Carlo study of critical-fluctuation effects on the magnetic-field temperature phase diagram associated with the hexagonal Heisenberg antiferromagnet with weak axial anisotropy are reported. The multiphase point where three lines of continuous transitions merge at the spin-flop boundary exhibits a structure consistent with scaling theory but without the ...
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(Received) Exact diagonalizations of two dimensional small t–J clusters reveal dominant hole-hole correlations at distance √ 2 (ie between holes on next nearest neighbor sites). A new form of singlet d x 2 −y 2 pair operator is proposed to account for the spatial extention of the two hole-bound pair beyond nearest neighbor sites.
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.59.387