TY - JOUR
T1 - Numerical Analysis of Spin-1/2 Alternating Heisenberg-XY Antiferromagnet in One Dimension
AU - Nishimori, Hidetoshi
AU - Okamoto, Kiyomi
PY - 1987/1/1
Y1 - 1987/1/1
N2 - The spin-1/2 alternating Heisenberg model with XY-like anisotropy is studied by numerical methods. This model exhibits critical behavior in the ground state as the bond-alternation parameter δ approaches 0. The critical exponents characterizing this ground-state critical point are estimated. The results agree well with those of the analytical calculation of Nakano and Fukuyama. A logarithmic correction of the type predicted by Black and Emery is found to be consistent with numerical data in the isotropic Heisenberg model but not in anisotropic models.
AB - The spin-1/2 alternating Heisenberg model with XY-like anisotropy is studied by numerical methods. This model exhibits critical behavior in the ground state as the bond-alternation parameter δ approaches 0. The critical exponents characterizing this ground-state critical point are estimated. The results agree well with those of the analytical calculation of Nakano and Fukuyama. A logarithmic correction of the type predicted by Black and Emery is found to be consistent with numerical data in the isotropic Heisenberg model but not in anisotropic models.
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U2 - 10.1143/JPSJ.56.1132
DO - 10.1143/JPSJ.56.1132
M3 - Article
AN - SCOPUS:0039839471
VL - 56
SP - 1132
EP - 1137
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
ER -