Skip to main content

Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy

Publication ,  Journal Article
Padilla, WJ; Mandrus, D; Basov, DN
Published in: Physical Review B - Condensed Matter and Materials Physics
July 15, 2002

Infrared reflectance measurements were made on the single crystal pyrochlore Cd2Os2O7 in order to examine the transformations of the electronic structure and crystal lattice across the boundary of the metal-insulator transition (MIT) at TMIT=226 K. All predicted IR active phonons are observed in the conductivity over all temperatures and the oscillator strength is found to be temperature independent. These results indicate that charge ordering plays only a minor role in the MIT and that the transition is strictly electronic in nature. The conductivity shows the clear opening of a gap with 2Δ=5.2kBTMIT. The gap opens continuously, with a temperature dependence similar to that of Bardeen-Cooper-Schrieffer (BCS) superconductors, and the gap edge having a distinct σ(ω) ∼ ω1/2 dependence. All of these observables support the suggestion of a Slater transition in Cd2Os2O7.

Duke Scholars

Published In

Physical Review B - Condensed Matter and Materials Physics

ISSN

0163-1829

Publication Date

July 15, 2002

Volume

66

Issue

3

Start / End Page

351201 / 351205
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Padilla, W. J., Mandrus, D., & Basov, D. N. (2002). Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 66(3), 351201–351205.
Padilla, W. J., D. Mandrus, and D. N. Basov. “Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy.” Physical Review B - Condensed Matter and Materials Physics 66, no. 3 (July 15, 2002): 351201–5.
Padilla WJ, Mandrus D, Basov DN. Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy. Physical Review B - Condensed Matter and Materials Physics. 2002 Jul 15;66(3):351201–5.
Padilla, W. J., et al. “Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy.” Physical Review B - Condensed Matter and Materials Physics, vol. 66, no. 3, July 2002, pp. 351201–05.
Padilla WJ, Mandrus D, Basov DN. Searching for the Slater transition in the pyrochlore Cd2Os2O7 with infrared spectroscopy. Physical Review B - Condensed Matter and Materials Physics. 2002 Jul 15;66(3):351201–351205.

Published In

Physical Review B - Condensed Matter and Materials Physics

ISSN

0163-1829

Publication Date

July 15, 2002

Volume

66

Issue

3

Start / End Page

351201 / 351205