title: Sequential electronic and structural transitions in VO2 observed using X-ray absorption spectromicroscopy.
abstract: The popular dual electronic and structural transitions in VO2 are explored using X-ray absorption spectromicroscopy with high spatial and spectral resolutions. It is found that during both heating and cooling, the electronic transition always precedes the structural Peierls transition. Between the two transitions, there are intermediate states that are spectrally isolated here.
authors.affiliation: Hewlett Packard Laboratories, 1501 Page Mill Road, Palo Alto, CA, 94304, USA; Stanford University, Stanford, CA, 94305, USA.
authors.forename: Suhas
authors.initials: S
authors.lastname: Kumar
authors.forename: John Paul
authors.initials: JP
authors.lastname: Strachan
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Pickett
authors.forename: Alexander
authors.initials: A
authors.lastname: Bratkovsky
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Nishi
authors.forename: R Stanley
authors.initials: RS
authors.lastname: Williams
keywords: X-ray spectroscopy; mott transition; peierls transition; vanadium oxide