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Antiferromagnetic state in the three-band Hubbard model

โœ Scribed by T. Asahata; A. Oguri; S. Maekawa

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
207 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

The antiferromagnetic (AFM) state in the three-band Hubbard model on a CuO 2 plane is studied by using both the variational Monte Carlo (VMC) method based on the Gutzwiller wave function and the Rice-Ueda type Gutzwiller approximation (GA). Near half-filling, the VMC energy is significantly improved by introducing AFM long range order. In the AFM state, the VMC energy is much lower than the GA energy. The AFM phase is suppressed by the direct O-O hopping more strongly in the hole-doped case than the electron doped case.

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