caa a22 4500 469041331 CHVBK 20180323132812.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF02857499 doi (NATIONALLICENCE)springer-10.1007/BF02857499 Anharmonic oxygen vibration and mode softening in Tl2Ba2Ca2Cu3O10 superconductor [Elektronische Daten] [Nabonita Chowdhury, Sankar Sanyal] The softening of the IR active 300 cm−1 phonon mode in Tl-2223 superconductor, aroundT c has been explained by considering a sixth order polarization potential at the off-center oxygen ion site in the Tl-O plane, and by using a nonlinear lattice dynamical theory. The present theory explains, more or less satisfactorily, the unusual temperature dependence of oxygen ion vibration and frequency shifts at higher temperature. The existence of strong nonlinear electron-phonon interaction atT c has been emphasized. the Indian Academy of Sciences, 1992 Phonon-electron interactions nationallicence anharmonic lattice modes nationallicence 63·20 nationallicence 63·50 nationallicence Chowdhury Nabonita Department of Physics, Barkatullah University, C V Raman Building, 462 026, Bhopal, India aut Sanyal Sankar Department of Physics, Barkatullah University, C V Raman Building, 462 026, Bhopal, India aut Pramana Springer India 39/2(1992-08-01), 101-108 0304-4289 39:2<101 1992 39 12043 https://doi.org/10.1007/BF02857499 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02857499 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chowdhury Nabonita Department of Physics, Barkatullah University, C V Raman Building, 462 026, Bhopal, India aut NATIONALLICENCE 700 1- Sanyal Sankar Department of Physics, Barkatullah University, C V Raman Building, 462 026, Bhopal, India aut NATIONALLICENCE 773 0- Pramana Springer India 39/2(1992-08-01), 101-108 0304-4289 39:2<101 1992 39 12043 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer