THz absorption bands in Sr14Cu24O41 by synchrotron radiation

Author

Constable, Evan ; Guochu Deng ; Horvat, J. ; Lewis, R.A.

Author_Institution

Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW, Australia

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

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.

Keywords

absorption; spectral methods of temperature measurement; strontium compounds; synchrotron radiation; thermal conductivity; Sr₁₄Cu₂₄O₄₁; THz absorption bands; absorption band spectral weight; conductivity band; frequency 0.45 THz to 3.3 THz; synchrotron radiation; temperature 100 K to 200 K; temperature dependent transmittance; Absorption; Couplings; Crystals; Phonons; Synchrotron radiation; Temperature dependence; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956359

Filename

6956359