Vibronic coupling and band gap trends in CuGeO3 nanorods

Kenneth R. O’Neal,1 Amal al-Wahish,1 Zhaoqian Li,2 Peng Chen,1 Jae Wook Kim,3 Sang-Wook Cheong,3 Guy Dhalenne,4 Alexandre Revcolevschi,4 Xue-Tai Chen,5 and Janice L. Musfeldt1,6 1Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA 2Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People’s Republic of China 3Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA 4SP2M-ICMMO UMR-CNRS 8182, Université Paris-Sud, 91405 Orsay Cedex, France 5State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, 210023, People’s Republic of China 6Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA (Received 12 May 2017; revised manuscript received 27 July 2017; published 28 August 2017)