Distinct Length Scales in the VO{sub 2} Metal–Insulator Transition Revealed by Bi-chromatic Optical Probing

Journal Article · Wed Jan 01 00:00:00 EST 2014 · Advanced Optical Materials

DOI:https://doi.org/10.1002/adom.201300333· OSTI ID:1115428

Wang, Lei ^[1]; Novikova, Irina B. ^[1]; Klopf, John M. ^[2]; Madaras, Scott E. ^[2]; Williams, Gwyn P. ^[1]; Madaras, Eric ^[3]; Lu, Liwei ^[4]; Wolf, Stuart A. ^[4]; Lukaszew, Rosa A. ^[1]

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1. College of William and Mary, Williamsburg, VA (United States)
2. JLAB, Newport News, VA (United States)
3. Nasa Langley Research Center, Hampton, VA (United States)
4. Univ. of Virginia, Charlottesville, VA (United States)

Upon a heating-induced metal–instulator transition (MIT) in VO{sub 2}, microscopic metallic VO{sub 2} puddles nucleate and coarsen within the insulating matrix. This coexistence of the two phases across the transition spans distinct length scales as their relative domain sizes change. Far-field optical probing is applied to follow the dynamic evolution of the highly correlated metallic domains as the MIT progresses.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 1115428
• Report Number(s): JLAB-FEL-14-1794; DOE/OR-23177-2975; TRN: US1400148
• Journal Information: Advanced Optical Materials, Vol. 2, Issue 1; ISSN 2195-1071
• Publisher: Wiley
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
far-field optical probing
thin films
vanadium dioxide
metal–insulator transitions