Skip to main content
eScholarship
Open Access Publications from the University of California

Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering

  • Author(s): He, H
  • Gray, AX
  • Granitzka, P
  • Jeong, JW
  • Aetukuri, NP
  • Kukreja, R
  • Miao, L
  • Breitweiser, SA
  • Wu, J
  • Huang, YB
  • Olalde-Velasco, P
  • Pelliciari, J
  • Schlotter, WF
  • Arenholz, E
  • Schmitt, T
  • Samant, MG
  • Parkin, SSP
  • Dürr, HA
  • Wray, LA
  • et al.
Abstract

© 2016 American Physical Society. Vanadium dioxide is of broad interest as a spin-12 electron system that realizes a metal-insulator transition near room temperature, due to a combination of strongly correlated and itinerant electron physics. Here, resonant inelastic x-ray scattering is used to measure the excitation spectrum of charge and spin degrees of freedom at the vanadium L edge under different polarization and temperature conditions, revealing excitations that differ greatly from those seen in optical measurements. These spectra encode the evolution of short-range energetics across the metal-insulator transition, including the low-temperature appearance of a strong candidate for the singlet-triplet excitation of a vanadium dimer.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View