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On the possibility of binding of two holes in an antiferromagnetic state

โœ Scribed by Y. Takahashi


Book ID
112511490
Publisher
Springer
Year
1987
Tongue
English
Weight
329 KB
Volume
67
Category
Article
ISSN
1434-6036

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Properties of doped holes in the antifer
โœ G. Vignale; M.R. Hedayati ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 128 KB

We calculate the self-energy of a single hole in the half-filled antlferromaguetic two-dimensional Hubbard model. The minimum energy occurs at k = (7r/2, 7r/2) and is 37% lower than in Hartree-Fock. The hole lifetime tends to infinity for low-lying states, showing that quasiholes are well-defined ex