Observation of Weakened V-V Dimers in the Monoclinic Metallic Phase of Strained VO2
Research output: Contribution to journal › Article
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.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Physical Review Letters|
|Publication status||Published - 2018 Dec 20|