Evidence of Phase Separation in the Hubbard Model

Chin. Phys. Lett.

2000, Vol. 17

Issue (5): 365-366 DOI:

Original Articles

Evidence of Phase Separation in the Hubbard Model

LUAN Bin-Quan;GONG Chang-De

National Key Laboratory of Solid States of Microstructure and Department of Physics, Nanjing University, Nanjing 210093

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LUAN Bin-Quan, GONG Chang-De 2000 Chin. Phys. Lett. 17 365-366

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Abstract We examine theoretically the possibility o f phase separation due to hole aggregation in the background of anti-ferromagnetically ordered CuO₂ planes. The results which are calculated within a self-consistent mean-field-type approximation give obvious evidence of phase separation. Our conclusions agree with previous numerical results (from exact diagonalization).

Keywords: 75.10.Jm

Published: 01 May 2000

PACS:

75.10.Jm

(Quantized spin models, including quantum spin frustration)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I5/0365

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