Two-magnon excitations in cuprates and nickelates
| ISSN: |
1572-9605
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| Keywords: |
Antiferromagnetism ; optical properties ; Heisenberg model ; cuprates ; nickelates
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Electrical Engineering, Measurement and Control Technology
Physics
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| Notes: |
Abstract We discuss two-magnon phonon-assisted infrared absorption in two-dimensional Heisenberg systems like the parent insulating high-T c cuprates (spin 1/2) and nickelates (spin 1). The theoretical line shape is compared with experiments. In the case of the cuprates it explains the mid-infrared peaks observed in the insulator. In the case of the nickelates the predicted line shape is also shown to agree with the experiments. We discuss the possibility to observe these excitations in other experiments.
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| Type of Medium: |
Electronic Resource
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| URL: |