THz absorption bands in Sr14Cu24O41 by synchrotron radiation

Authors

Evan Constable, University of WollongongFollow
Guochu Deng, The Bragg Institute
Joseph Horvat, University of WollongongFollow
R A. Lewis, University of WollongongFollow

RIS ID

96316

Publication Details

Constable, E., Deng, G., Horvat, J. & Lewis, R. A. (2014). THz absorption bands in Sr14Cu24O41 by synchrotron radiation. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz (pp. 1-2). United States: IEEE.

Abstract

We use unpolarized synchrotron radiation to probe the temperature dependent transmittance of single crystal Sr14Cu24O41 in the spectral range 15-110 cm-1 (0.45-3.3 THz). At high temperature we identify a conductivity band, which we assign to hole hopping between neighboring chains. At low temperatures we identify 14 resonance bands, 11 of which are previously unreported. Analysis of the absorption band spectral weight indicates mode coupling accompanying a transition in the vicinity of 100-200 K.