Chemistry Publications and Other Works
Source Publication (e.g., journal title)
Physical Review B
Document Type
Article
Publication Date
8-28-2017
DOI
10.1103/PhysRevB.96.075437
Abstract
We measured the optical response of CuGeO3 nanorods in order to reveal size effects on the electronic properties. The vibronically activated d-to-d color band excitations are activated by the 131 and 478 cm−1 phonons, with the relative contribution of the lower frequency O-Cu-O bending mode increasing with decreasing size until it dominates the process. We also uncover trends in the direct band gap, with the charge transfer edge hardening with decreasing size. These findings advance the understanding of size effects in low-dimensional copper oxides.
Recommended Citation
O'Neal, Kenneth Robert; al-Wahish, Amal; Li, Z; Chen, P; Kim, J W.; Cheong, Sang-Wook; Dhalenne, G; Revcolevschi, A; Chen, X-T; and Musfeldt, Janice L., "Vibronic coupling and band gap trends in CuGeO3 nanorods" (2017). Chemistry Publications and Other Works.
https://trace.tennessee.edu/utk_chempubs/53
Submission Type
Post-print