ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 Mott Switching and Structural Transition in the Metal Phase of VO2 Nanodomain
Cited 8 time in scopus Download 21 time Share share facebook twitter linkedin kakaostory
저자
김창용, 테티아나, 조진철, 김현탁
발행일
202102
출처
ACS Applied Electronic Materials, v.3 no.2, pp.605-610
ISSN
2637-6113
출판사
American Chemical Society(ACS)
DOI
https://dx.doi.org/10.1021/acsaelm.0c00983
협약과제
20HB1100, 휴대 단말용 급격한 전하방전 저전압 스위칭 소자 원천기술 개발, 노태문
초록
VO2 undergoes the insulator-metal transition (IMT) and monoclinic-rutile structural phase transition (SPT) near 67 °C. The IMT switching has many applications. However, there is an unresolved issue whether the IMT is a Mott transition or a Peierls transition. This complication is caused by metal and insulator coexistence, which is an inherent property of the IMT region. Thus, the acquired data in the IMT region are averaged over the two phases in many experiments. We overcome the issue by probing the electronic state of the monoclinic structure and by introducing a model that accounts for the coexisting phases. We reveal the Mott IMT in the nondistorted monoclinic nanodomain between 55 and 63 °C and the distortion-assisted SPT above 60 °C.
키워드
electron correlation, Mott transition, nanodomain, phase coexistence, vanadium dioxide
KSP 제안 키워드
Electronic state, Metal phase, Mott transition, Phase coexistence, Two-phase, electron correlation, insulator-metal transition, monoclinic structure, peierls transition, structural phase transition, structural transition
본 저작물은 크리에이티브 커먼즈 저작자 표시 - 비영리 - 변경금지 (CC BY NC ND) 조건에 따라 이용할 수 있습니다.
저작자 표시 - 비영리 - 변경금지 (CC BY NC ND)