B
Byung-Gyu Chae
Researcher at Electronics and Telecommunications Research Institute
Publications - 128
Citations - 6670
Byung-Gyu Chae is an academic researcher from Electronics and Telecommunications Research Institute. The author has contributed to research in topics: Holography & Metal–insulator transition. The author has an hindex of 29, co-authored 124 publications receiving 6102 citations. Previous affiliations of Byung-Gyu Chae include Pusan National University.
Papers
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Journal ArticleDOI
Mott Transition in VO2 Revealed by Infrared Spectroscopy and Nano-Imaging
M. Mumtaz Qazilbash,M. Brehm,Byung-Gyu Chae,Pei-Chun Ho,Gregory O. Andreev,Bong-Jun Kim,Sun Jin Yun,Alexander V. Balatsky,M. B. Maple,Fritz Keilmann,Hyun-Tak Kim,Dimitri Basov +11 more
TL;DR: The electronic properties of a prototypical correlated insulator vanadium dioxide in which the metallic state can be induced by increasing temperature is reported, setting the stage for investigations of charge dynamics on the nanoscale in other inhomogeneous correlated electron systems.
Journal ArticleDOI
Memory Metamaterials
Tom Driscoll,Hyun-Tak Kim,Byung-Gyu Chae,Bong-Jun Kim,Yong-Wook Lee,Nan Marie Jokerst,Sabarni Palit,David J. Smith,Massimiliano Di Ventra,Dimitri Basov +9 more
TL;DR: In this paper, the authors demonstrate a form of memory capacitance which interfaces metamaterials with a class of devices known collectively as memory devices, and demonstrate electrically-controlled persistent frequency tuning of a metammaterial, allowing lasting modification of its response using a transient stimulus.
Journal ArticleDOI
Mechanism and observation of Mott transition in VO2-based two- and three-terminal devices
Hyun-Tak Kim,Byung-Gyu Chae,Doo-Hyeb Youn,Sunglyul Maeng,Gyungock Kim,Kwang-Yong Kang,Yong-Sik Lim +6 more
TL;DR: When holes of about 0.018% are induced into a conduction band (breakdown of critical on-site Coulomb energy), an abrupt first-order Mott metal-insulator transition (MIT) was observed on an inhomogeneous VO2 film, a strongly correlated Mott insulator.
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Phase-transition driven memristive system
TL;DR: In this article, the authors demonstrate memristive response in a thin film of Vanadium Dioxide, which is driven by the insulator-to-metal phase transition typical of this oxide.
Journal ArticleDOI
Dynamic tuning of an infrared hybrid-metamaterial resonance using vanadium dioxide
Tom Driscoll,Sabarni Palit,M. Mumtaz Qazilbash,M. Brehm,Fritz Keilmann,Byung-Gyu Chae,Sun-Jin Yun,Hyun-Tak Kim,Sang-Yeon Cho,N. Marie Jokerst,David R. Smith,Dimitri Basov +11 more
TL;DR: In this paper, a hybrid-metamaterial architecture is proposed for tuning a far-infrared resonance frequency with vanadium dioxide (VO2), a material whose optical properties can be strongly and quickly changed via external stimulus.