Abstract
A self-consistent systematic expansion is developed for the t-J model in the Schwinger boson approach. We treat the fermion part beyond the mean-field approximation and study the effects of magnetic fluctuations on the normal state properties. It is found that the hole motion is strongly renormalized and incoherent bands are produced by magnetic fluctuations. The conductivity and the electron density of states are calculated and shown to be anomalous. The antiferromagnetic nature of fluctuations is found to be essential for these unusual properties. The relevance of the obtained results to oxide superconductors is also discussed. (author). 31 refs, 4 figs.
Li, Y M;
Yu, L;
[1]
Sheng, D N;
Su, Z B
[2]
- International Centre for Theoretical Physics, Trieste (Italy)
- Academia Sinica, Beijing, BJ (China). Inst. of Theoretical Physics
Citation Formats
Li, Y M, Yu, L, Sheng, D N, and Su, Z B.
Schwinger boson studies of the t-J model beyond mean-field approximation.
IAEA: N. p.,
1991.
Web.
Li, Y M, Yu, L, Sheng, D N, & Su, Z B.
Schwinger boson studies of the t-J model beyond mean-field approximation.
IAEA.
Li, Y M, Yu, L, Sheng, D N, and Su, Z B.
1991.
"Schwinger boson studies of the t-J model beyond mean-field approximation."
IAEA.
@misc{etde_10145773,
title = {Schwinger boson studies of the t-J model beyond mean-field approximation}
author = {Li, Y M, Yu, L, Sheng, D N, and Su, Z B}
abstractNote = {A self-consistent systematic expansion is developed for the t-J model in the Schwinger boson approach. We treat the fermion part beyond the mean-field approximation and study the effects of magnetic fluctuations on the normal state properties. It is found that the hole motion is strongly renormalized and incoherent bands are produced by magnetic fluctuations. The conductivity and the electron density of states are calculated and shown to be anomalous. The antiferromagnetic nature of fluctuations is found to be essential for these unusual properties. The relevance of the obtained results to oxide superconductors is also discussed. (author). 31 refs, 4 figs.}
place = {IAEA}
year = {1991}
month = {Dec}
}
title = {Schwinger boson studies of the t-J model beyond mean-field approximation}
author = {Li, Y M, Yu, L, Sheng, D N, and Su, Z B}
abstractNote = {A self-consistent systematic expansion is developed for the t-J model in the Schwinger boson approach. We treat the fermion part beyond the mean-field approximation and study the effects of magnetic fluctuations on the normal state properties. It is found that the hole motion is strongly renormalized and incoherent bands are produced by magnetic fluctuations. The conductivity and the electron density of states are calculated and shown to be anomalous. The antiferromagnetic nature of fluctuations is found to be essential for these unusual properties. The relevance of the obtained results to oxide superconductors is also discussed. (author). 31 refs, 4 figs.}
place = {IAEA}
year = {1991}
month = {Dec}
}