Heindl, Werner and Pruschke, Thomas and Keller, Joachim (2000) Incoherence in bilayer systems with strong electronic correlations. JOURNAL OF PHYSICS-CONDENSED MATTER, 12 (10). pp. 2245-2263. ISSN 0953-8984
Full text not available from this repository.Abstract
We present results for the one-particle properties and c-axis transport for exchange-coupled bilayer systems with strong electronic correlations in the paramagnetic phase. The model is solved within the dynamical mean-field theory (DMFT). By considering an effective two-site impurity we are able to treat the coupling between the layers in the diagonalization of the effective impurity exactly. The one-particle properties and the optical conductivity between the planes are studied, giving insight into a possible suppression of the one-particle hopping between the planes by the antiferromagnetic coupling. A strong renormalization of the bilayer splitting up to a complete suppression by the antiferromagnetic coupling is found. In the optical conductivity a strong blocking of the charge dynamics between the planes can be seen, accompanied by a low-energy excitation which must be attributed to inter-plane spin fluctuations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MEAN-FIELD THEORY; T-J MODEL; HIGH-TEMPERATURE SUPERCONDUCTORS; NORMAL-STATE PROPERTIES; FERMION SYSTEMS; INFINITE DIMENSIONS; C SUPERCONDUCTORS; QUASI-PARTICLE; EXCITATIONS; LATTICE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Joachim Keller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 May 2022 10:18 |
| Last Modified: | 24 May 2022 10:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42759 |
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