Infrared Active Vibrational Modes Strongly Coupled to Carriers in High- T c Superconductors
- 10 September 1995
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 31 (8) , 473-478
- https://doi.org/10.1209/0295-5075/31/8/009
Abstract
Infrared active vibrational modes (IRAV), similar to the extra-phonon absorption features which are likely to be responsible for polaron formation in insulating cuprates, have been detected in a metallic Bi2Sr2CuO6 film. The new modes can also be identified in the spectra of superconducting Nd2 - xCexCuO4 - y and YBa2Cu3O7 - y. A comparison with tunnelling results confirms that such IRAV are strongly coupled to the charge carriers.Keywords
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