세미나
Single-crystalline 2-dimensional chalcogenide films
- 일시 2022-12-07 15:00 ~ 19:00
- 장소 대양AI센터 B116호
- 연사 장영준 교수
- 소속 서울시립대학교 물리학과
Transition metal chalcogenides (TMCs) draw huge attention because of their remarkable optical, electrical, magnetic, and electrochemical properties. Van der Waals layered phases and their topological variants provide excellent material platforms to explore exciting physical phenomena, such as type-II topological Dirac semimetal, chiral superconductor, quantum anomalous Hall insulator, and Axion insulator. Single-crystalline ultrathin films of novel chalcogenide phases are readily essential for characterizing the fundamental properties of TMCs in the 2D limit. Here, we present epitaxial growth of TMC films among selenides and tellurides, such as semiconducting ReSe2, MoSe2,[1,2] correlated metallic V(S,Se)2 with charge-density wave,[3,4] and ferromagnetic Cr2Te3.[5] On the ultrathin epitaxial films, we could reveal electronic band structures by angle-resolved photoemission spectroscopy (ARPES), scanning tunneling microscopy (STM), or X-ray absorption (XAS). We further extend our efforts to synthesizing novel TMC phases including sulfide and oxysulfide.
Copyright 2021 Department of Hybrid Materials Research & Advanced Materials Engineering, Sejong University. All rights reserved.
143-747(05006) 서울특별시 광진구 능동로 209(군자동) 세종대학교 충무관 817호 하이브리드 재료 응용 연구소
Tel : +82-2-3408-3786 Fax : +82-2-3408-4342
