Universal phase dynamics in VO <sub>2</sub> switches revealed by ultrafast operando diffraction
-
- Aditya Sood
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
-
- Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
-
- Yin Shi
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
-
- Suhas Kumar
- Hewlett Packard Labs, Palo Alto, CA 94304, USA.
-
- Su Ji Park
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
-
- Marc Zajac
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
-
- Yifei Sun
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA.
-
- Long-Qing Chen
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
-
- Shriram Ramanathan
- School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA.
-
- Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
-
- William C. Chueh
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
-
- Aaron M. Lindenberg
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
抄録
<jats:title>A transient metal</jats:title> <jats:p> Vanadium dioxide is known to have a coupled structural and electronic transition that can be accessed through light, thermal, or electrical excitation. Ultrafast optical studies of this insulator-to-metal transition indicate that it is mediated by the formation of a transient metallic phase that retains the structure of the original insulating phase. Sood <jats:italic>et al.</jats:italic> show that a similar sequence occurs when the material is electrically excited with a series of voltage pulses. Using ultrafast electron diffraction, the researchers monitored the structure of a vanadium dioxide sample after excitation and found evidence of a metastable metallic phase that appears during the transition. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , abc0652, this issue p. <jats:related-article issue="6552" page="352" related-article-type="in-this-issue" vol="373">352</jats:related-article> </jats:p>
収録刊行物
-
- Science
-
Science 373 (6552), 352-355, 2021-07-16
American Association for the Advancement of Science (AAAS)