Antiferromagnetic order in doped hubbard model under the magnetic field
β Scribed by Seung-Pyo Hong; Hyeonjin Doh; Sung-Ho Suck Salk
- Book ID
- 112784208
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 157 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0011-4626
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π SIMILAR VOLUMES
The temperature and doping dependence of the 2D Hubbard model is studied in the intermediate coupling regime U 4: Strong 2D critical spin fluctuations dominating near half-filling are completely destroyed upon about 14% doping concentration, below which the imaginary part of the self-energy vanishes
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