Optical properties of NaxV2O5
M. J. Konstantinovic, Z. V. Popovic, V. V. Moshchalkov, C. Presura, R. Gajic, M. Isobe, Y. Ueda
Abstract
The optical properties of sodium-deficient NaxV2O5 (0.85 < x <1) single crystals are analyzed in the wide energy range, from 0.012 to 4.5 eV, using ellipsometry, infrared reflectivity, and Raman scattering techniques. The material remains insulating up to the maximal achieved hole concentration of about 15%. In sodium deficient samples the optical absorption peak associated to the fundamental electronic gap develops at about 0.44 eV. It corresponds to the transition between vanadium dxy and the impurity band, which forms in the middle of the pure NaV2O5 gap. Raman spectra measured with incident photon energy larger then 2 eV show strong resonant behavior, due to the presence of the hole-doping activated optical transitions, peaked at 2.8 eV.
Create a lesson
Related papers
Magpie: A Graphical Magnon Software
Tobias Weber
Variational Minimization of Almost Strong Zero Modes in Parafermionic Wires
Niklas Tausendpfund, Matteo Rizzi
Field Response of the Orbital Moment Probed by Integrated Magnetic Circular Dichroism
Qian-Sheng Shi, Ziqiang Wang, Jian Kang et al.
Single-Particle Spectroscopy and Cross-Barrier Dynamics in Inhomogeneous Luttinger Liquids via Unified Field Bosonization Technique
Soundarya P, Venkata Suryanarayana M, Joy Prakash Das
Realistic Simulation of Valence-band Photoemission Spectra by using First-principles Calculations on the Basis of FLAPW Method
Noriaki Hamada, Satoshi Nakamura, Kenta Takahashi et al.
Dynamical chiral symmetry breaking in rotating QED3: critical flavor number and the occupation-reweighting channel
Wei Li