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Variational Monte Carlo study for generalized flux phases in the t-J model

✍ Scribed by M. Ogata; T.M. Rice

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 415 KB
Volume: 165-166
Category: Article
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(09)80096-3

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✦ Synopsis

We study new wavefunctions for generalized flux phases by the variational Monte Carlo method, in which the motion of holes produces additional phase factors besides those due to the motion of electrons. The phase factors cancel each other at some special electron densities and, as a result, there are no orbital currents in these states. We investigate especially the I/3-filled case and find a wavefunction with lower kinetic energy than the original commensurate flux phase. We also calculate the chirality to confirm that time reversal symmetry is broken also in these states.

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