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Prog. Theor. Phys. Supplement No.159 (2005) pp. 412-416
Effects of Impurities in Quasi-One-Dimensional S = 1 Antiferromagnets
Munehisa Matsumoto1 and
Hajime Takayama2
1Department of Physics, Tohoku University, Sendai 980-8578, Japan
2Institute for Solid State Physics, The University of Tokyo, Kashiwa
277-8581, Japan
Abstract:
For the weakly coupled S = 1 antiferromagnetic Heisenberg chains
on a simple cubic lattice, the effects of magnetic impurities
are investigated by the quantum Monte Carlo method with the
continuous-time loop algorithm. The transition temperatures of
the impurity-induced phase transitions for magnetic impurities
with S = 1/2, 3/2 and 2 are determined and compared with
the transition temperature induced by the non-magnetic impurities.
Implications on the experimental results are discussed.
URL :
http://ptp.ipap.jp/link?PTPS/159/412/
DOI : 10.1143/PTPS.159.412
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