Antiferromagnetism to Superconductivity Transition in the Extended Hubbard Model

Chin. Phys. Lett.

1994, Vol. 11

Issue (6): 365-368 DOI:

Original Articles

Antiferromagnetism to Superconductivity Transition in the Extended Hubbard Model

YAN Xinzhong

Institute of Physics, Academia Sinica, Beijing 100080

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YAN Xinzhong 1994 Chin. Phys. Lett. 11 365-368

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Abstract By taking into account the possibility of phonon mediation, we add the Hubbard model a term of attractive interaction between the electrons on nearest-neighbor sites. There is a competition between the electrons pairing and the antiferromagnetic correlation. Using the mean-field theory, we show that there exists the superconducting phase transition in the doped system.

Keywords: 74.65.+n 71.27.+a

Published: 01 June 1994

PACS:	74.65.+n
	71.27.+a	(Strongly correlated electron systems; heavy fermions)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1994/V11/I6/0365

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