Simultaneous Structural and Electronic Transitions in Epitaxial VO_{2}/TiO_{2}(001).

Autor: Paez GJ; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Singh CN; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Wahila MJ; Materials Science and Engineering, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Tirpak KE; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Quackenbush NF; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Sallis S; Materials Science and Engineering, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Paik H; Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853-1501, USA.; Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University, Ithaca, New York 14853, USA., Liang Y; The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Schlom DG; Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853-1501, USA.; Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA., Lee TL; Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom., Schlueter C; Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom., Lee WC; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA., Piper LFJ; Department of Physics, Binghamton University, State University of New York, Binghamton, New York 13850, USA.; Materials Science and Engineering, Binghamton University, State University of New York, Binghamton, New York 13850, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2020 May 15; Vol. 124 (19), pp. 196402.
DOI: 10.1103/PhysRevLett.124.196402
Abstrakt: Recent reports have identified new metaphases of VO_{2} with strain and/or doping, suggesting the structural phase transition and the metal-to-insulator transition might be decoupled. Using epitaxially strained VO_{2}/TiO_{2} (001) thin films, which display a bulklike abrupt metal-to-insulator transition and rutile to monoclinic transition structural phase transition, we employ x-ray standing waves combined with hard x-ray photoelectron spectroscopy to simultaneously measure the structural and electronic transitions. This x-ray standing waves study elegantly demonstrates the structural and electronic transitions occur concurrently within experimental limits (±1  K).
Databáze: MEDLINE