Annealing effects on the optical conductivity of single crystal (formula presented).pdf (108.36 kB)

Annealing effects on the optical conductivity of single crystal (formula presented) (formula presented)

Download (108.36 kB)
journal contribution
posted on 21.09.2020 by Ocean Mercier, Robert Buckley, A Bittar, Harry Trodahl, EM Haines, JB Metson, Y Tomioka
Optical reflectance spectra were measured in the temperature range 70–295 K, and in the energy range of 0.006–6 eV for single crystals of (formula presented) before and after annealing. The conductivity spectrum of the unannealed (formula presented) in its low-temperature metallic phase features a Drude-like peak, the spectral weight of which is dramatically increased by annealing the sample. Annealing also repairs a negative anomaly in the conductivity, which is thought to be associated with a surface layer damaged by polishing. A secondary ion mass spectrometry measurement shows, however, that the surface valence becomes depth dependent upon annealing. On the basis that the skin depth is far greater than the extent of annealing damages in the low-energy spectral region, analysis of the temperature dependence of the effective number of carriers (formula presented) below 0.5 eV is presented. © 2001 The American Physical Society.

History

Preferred citation

Mercier, O. R., Buckley, R. G., Bittar, A., Trodahl, H. J., Haines, E. M., Metson, J. B. & Tomioka, Y. (2001). Annealing effects on the optical conductivity of single crystal (formula presented) (formula presented). Physical Review B - Condensed Matter and Materials Physics, 64(3). https://doi.org/10.1103/PhysRevB.64.035106

Journal title

Physical Review B - Condensed Matter and Materials Physics

Volume

64

Issue

3

Publication date

01/01/2001

Publisher

American Physical Society (APS)

Publication status

Published

Online publication date

28/06/2001

ISSN

1098-0121

eISSN

1550-235X

Article number

035106

Language

en

Exports

Logo branding

Categories

Exports