FERMION-SPIN APPROACH TO STUDY A DOPED ANTIFERROMAGNET | Zendy

XU XIN | Zendy; Yun Song | Zendy; Shiping Feng | Zendy

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FERMION-SPIN APPROACH TO STUDY A DOPED ANTIFERROMAGNET

Author(s) -

XU XIN,

Yun Song,

Shiping Feng

Publication year - 1996

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.45.1390

Subject(s) - physics , ground state , antiferromagnetism , fermion , kinetic energy , mean field theory , t j model , spin (aerodynamics) , projection (relational algebra) , field (mathematics) , condensed matter physics , quantum mechanics , hubbard model , computer science , superconductivity , mathematics , thermodynamics , algorithm , pure mathematics

Within the mean-field approximation, we discuss effects of the projection operator in the fermion-spin theory. The ground-state kinetic energy of the t-J model is studied, and the results show that the mean-field ground-state kinetic energy is consistent with the numerical results. The possible phase separation is also discussed.

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