Eur. Phys. J. B 23, 325-327 (2001)
https://doi.org/10.1007/s100510170051

Photoinduced IR absorption in WO₃: determination of the polaron binding energy

Jozef Stefan Institute, PO Box 3000, 1001 Ljubljana, Slovenia and University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, 1000 Ljubljana, Slovenia

Corresponding author: ^a tomaz.mertelj@ijs.si

Received: 20 April 2001
Revised: 13 July 2001
Published online: 15 October 2001

Abstract

Photoinduced IR absorption measurements are reported on WO₃. A photoinduced midinfrared small polaron peak centered at 4800 cm^-1 (0.59 eV) was observed. The data were analyzed in the framework of the photon-assisted small-polaron hopping theory and briefly compared to previously published infrared absorption measurements in WO₃ and photoinduced IR absorption measurements in high T_c cuprates.