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On‐Demand Nanoscale Manipulations of Correlated Oxide Phases
Author(s) -
Schrecongost Dustin,
Aziziha Mina,
Zhang HaiTian,
Tung ICheng,
Tessmer Joseph,
Dai Weitao,
Wang Qiang,
EngelHerbert Roman,
Wen Haidan,
Picard Yoosuf N.,
Cen Cheng
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201905585
Subject(s) - materials science , nanoscopic scale , monoclinic crystal system , phase (matter) , metastability , phase transition , nanotechnology , rutile , photonics , oxide , optoelectronics , condensed matter physics , chemical engineering , crystallography , crystal structure , metallurgy , chemistry , physics , organic chemistry , quantum mechanics , engineering
Controlling material properties at the nanoscale is a critical enabler of high performance electronic and photonic devices. A prototypical material example is VO 2 , where a structural phase transition in correlation with dramatic changes in resistivity, optical response, and thermal properties demonstrates particular technological importance. While the phase transition in VO 2 can be controlled at macroscopic scales, reliable and reversible nanoscale control of the material phases has remained elusive. Here, reconfigurable nanoscale manipulations of VO 2 from the pristine monoclinic semiconducting phase to either a stable monoclinic metallic phase, a metastable rutile metallic phase, or a layered insulating phase using an atomic force microscope is demonstrated at room temperature. The capability to directly write and erase arbitrary 2D patterns of different material phases with distinct optical and electrical properties builds a solid foundation for future reprogrammable multifunctional device engineering.