Observation of Weakened V-V Dimers in the Monoclinic Metallic Phase of Strained VO2

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Emergent order at mesoscopic length scales in condensed matter can provide fundamental insight into the underlying competing interactions and their relationship with the order parameter. Using spectromicroscopy, we show that mesoscopic stripe order near the metal-insulator transition (MIT) of strained VO2 represents periodic modulations in both crystal symmetry and V - V dimerization. Above the MIT, we unexpectedly find the long-range order of V - V dimer strength and crystal symmetry become dissociated beyond ≈200 nm, whereas the conductivity transition proceeds homogeneously in a narrow temperature range.

Detaljer

Författare
  • J. Laverock
  • V. Jovic
  • A. A. Zakharov
  • Y. R. Niu
  • S. Kittiwatanakul
  • B. Westhenry
  • J. W. Lu
  • S. A. Wolf
  • K. E. Smith
Enheter & grupper
Externa organisationer
  • University of Bristol
  • Boston University
  • University of Auckland
  • University of Virginia
  • Chulalongkorn University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
Originalspråkengelska
Artikelnummer256403
TidskriftPhysical Review Letters
Volym121
Utgivningsnummer25
StatusPublished - 2018 dec 20
PublikationskategoriForskning
Peer review utfördJa