Isostructural metal-insulator transition in VO 2
Abstract
Above 341 kelvin—not far from room temperature—bulk vanadium dioxide (VO 2 ) is a metal. But as soon as the material is cooled below 341 kelvin, VO 2 turns into an insulator and, at the same time, changes its crystal structure from rutile to monoclinic. Lee et al. studied the peculiar behavior of a heterostructure consisting of a layer of VO 2 placed underneath a layer of the same material that has a bit less oxygen. In the VO 2 layer, the structural transition occurred at a higher temperature than the metal-insulator transition. In between those two temperatures, VO 2 was a metal with a monoclinic structure—a combination that does not occur in the absence of the adjoining oxygen-poor layer.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 30, 2018
- Source ID
- 10.1126/science.aam9189
Entities
People
- Bongwook Chung
- Chang-Beom Eom
- Daesu Lee
- Dmitri A. Tenne
- E. Y. Tsymbal
- Fei Xue
- Gi-Yeop Kim
- J-H Kang
- J-W Kim
- J. W. Spinuzzi
- Jacob Podkaminer
- Jaichan Lee
- K. Song
- Long-Qing Chen
- M. S. Rzchowski
- N. Campbell
- Philip J. Ryan
- Si-Young Choi
- T. H. Kim
- Tula R Paudel
- Yin Shi
Organizations
- Air Force Office of Scientific Research
- Argonne National Laboratory
- Boise State University
- Dublin City University
- National Science Foundation
- Office of Naval Research
- Pennsylvania State University
- Sungkyunkwan University
- United States Department of Energy
- University of Nebraska–Lincoln
- University of Wisconsin–Madison