Diamagnetic Properties of Doped Antiferromagnets
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Finite-temperature diamagnetic properties of doped antiferromagnets as modeled by the two-dimensional t-J model were investigated by numerical studies of small model systems. Two numerical methods were used: the worldline quantum Monte Carlo method with a loop cluster algorithm (QMC) and the finite-temperature Lanczos method (FTLM), yielding consistent results. The diamagnetic susceptibility introduced by coupling of the magnetic field to the orbital current reveals an anomalous temperature dependence, changing character from diamagnetic to paramagnetic at intermediate temperatures.
LaTeX, 3 pages, 6 figures
LaTeX, 3 pages, 6 figures
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Consulte el texto completo en el siguiente enlace:
https://arxiv.org/abs/cond-mat/0203519
http://arxiv.org/abs/cond-mat/0203519
published in Proc. of NATO ARW on Open Problems in Strongly Correlated Electron Systems (Bled 2000), edited by J. Bonca, P. Prelovsek, A. Ramsak, and S. Sarkar (Kluwer, Dordrecht, 2001), http://www.wkap.nl/prod/b/0-7923-6896-7
http://arxiv.org/abs/cond-mat/0203519
published in Proc. of NATO ARW on Open Problems in Strongly Correlated Electron Systems (Bled 2000), edited by J. Bonca, P. Prelovsek, A. Ramsak, and S. Sarkar (Kluwer, Dordrecht, 2001), http://www.wkap.nl/prod/b/0-7923-6896-7