Title

Nanoscale imaging of the electronic and structural transitions in vanadium dioxide

Document Type

Article

Department/Program

Physics

Journal Title

Physical Review B

Pub Date

2011

Volume

83

Issue

16

Abstract

We investigate the electronic and structural changes at the nanoscale in vanadium dioxide (VO2) in the vicinity of its thermally driven phase transition. Both electronic and structural changes exhibit phase coexistence leading to percolation. In addition, we observe a dichotomy between the local electronic and structural transitions. Nanoscale x-ray diffraction reveals local, nonmonotonic switching of the lattice structure, a phenomenon that is not seen in the electronic insulator-to-metal transition mapped by near-field infrared microscopy.

DOI

10.1103/PhysRevB.83.165108

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