Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering
Permanent link to this recordhttp://hdl.handle.net/20.500.12613/5002
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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.
Citation to related workAmerican Physical Society (APS)
Has partPhysical Review B
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