korean english


Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다.

4시 20분부터 제1과학관 31214 e+강의실에서 간단한 다과를 제공합니다.

아 래

Title: Hidden-in-bulk Phase Transitions in Artificial Quantum Materials

Speaker: 이  대  수 교수님 (Department of Physics, POSTECH)

Date & Time: Nov. 7. (Wed.) 2018 4:30 PM

Place: Natural Science 1,  Room No. 31214

Abstract: A major challenge in condensed matter physics is predictive control of physical properties and functions in complex materials. In this talk, I will demonstrate a heterostructuring approach to engineer free-energy landscape and stabilize a new state, otherwise away from equilibrium, in a controlled way. First, as a model material, I choose an archetypal correlated material VO2, which has the insulating ground state of the monoclinic phase. A designed heterostructure suppresses the electronic correlation without changing the crystal structure in this otherwise correlated insulator. It stabilizes a nonequilibrium metallic state, leading to an isostructural metal-insulator transition. In addition, I will show emergence of an ordered ferroelectric state in ultrathin films of an otherwise non-ferroelectric SrTiO3. This challenges the long-standing notion that a collective order (e.g., ferroelectricity) is inevitably suppressed at the scale of a few nanometers. Last, I will shortly discuss on how the atomic-layer-controlled heterostructuring can manipulate complex phase transitions in a predictive manner. These discoveries highlight the ability to control the hidden-in-bulk phase transitions in heterostructures, as well as provide new insights for exploring complex materials.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1029940
306 <March. 23(Wed.) 4:30 PM> 조선시대의 천문시계 2016.03.17 55569
305 <Nov.15(Wed.) 4:30 PM> Mixed metal oxide films for energy and memory device applications 2017.11.08 57144
304 <Oct. 19(Wed.) 10:00 AM> Hyper-Kamiokande project -The future of neutrino physics in Japan 2016.10.12 57198
303 <5/13(수) 오후4:30분> 내가 몰랐던 대한민국 2015.05.07 57773
302 <Oct. 5(Wed.) 4:30 PM> 국제원자력기구 (IAEA)와 핵데이터 2016.09.22 58686
301 <4/29(수) 오후4:30분> 양자정보 2015.04.23 58842
300 <Mar.13(Wed.)> Physics in Medicine: Magnetic Resonance Imaging 2019.03.07 58982
299 <Nov. 4(Wed.) 4:30 PM> 기능성 산화물과 그래핀을 접합한 나노소자의 특성 변화 2015.10.30 59124
298 <12/3(수)> 진공은 무( 無)로 채워지지 않았다. 힉스입자를 찾아서 2014.11.27 59495
297 <Nov. 23(Wed.) 4:30 PM> Dry (Plasma) etch process in Semiconductor Device 2016.11.16 59598
296 <May.2(Wed.) 4:30 PM> Machine learning and statistical physics 2018.04.23 59776
295 <3/25(수) 오후4:30분> 슈퍼컴퓨터와 국가경쟁력 2015.03.19 59803
294 <May.15(Wed.)> Three-body problems and three-body forces in Classic and Quantum Systems 2019.05.08 60028
293 <June 14(Wed.) 4:30 PM> Stellar core collapse: success or failure, and future probes 2017.06.08 60055
292 <3/11(수) 오후4시:30분> 테크노-이매지네이션(Techno-imagination) 2015.03.04 60078
291 <5/6(수) 오후4:30분> 빛의 여행 2015.04.29 60090
290 <Sep.19(Wed.) 4:30 PM> Superconducting Quantum Computing (초전도 양자컴퓨팅) 2018.09.12 60252
289 <4/1(수) 오후4:30분> 과학기술과 미디어 2015.03.26 60775
288 <Nov.14(Wed.) 4:30 PM> Status and Prospects for the IceCube Neutrino Observatory 2018.11.07 60925
287 <Nov.22(Wed.) 4:30 PM> Dark Side of the Universe 2017.11.15 61561