
Proceedings Paper
Phonon-assisted IR spectroscopy of quantum antiferromagnetsFormat | Member Price | Non-Member Price |
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Paper Abstract
We review recent theoretical results for multimagnon-phonon assisted infrared absorption in antiferromagnetic Heisenberg systems. We show spin wave theory line shapes for 2D spin 1/2 systems (like the parent insulating high-Tc cuprates) 1D spin 1/2 systems and 2D spin 1 systems (like the nickelates) and exact diagonalization results in two-dimensional spin 1/2 systems. The theoretical line shapes are compared with experiments. In the case of cuprates they explain mid-infrared peaks observed in the insulator. In the case of the nickelates a predicted line shape is also shown to agree with the experiments. We discuss the possibility to observe these excitations in other experiments.
Paper Details
Date Published: 10 June 1996
PDF: 9 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241761
Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)
PDF: 9 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241761
Show Author Affiliations
Jose Lorenzana, Lab. Leon Brillouin (France)
R. Eder, Univ. Groningen (Netherlands)
R. Eder, Univ. Groningen (Netherlands)
George A. Sawatzky, Univ. Groningen (Netherlands)
Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)
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