logo

korean english

게시판

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 2022학년도 1학기 콜로퀴움 일정 2022.01.10 1005
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 812865
295 <Nov. 2(Wed.) 4:30 PM> 현대 우주론 이론과 관찰 (Theories and observations of modern cosmology) 2016.10.19 49413
294 <Mar. 22(Wed.) 4:30 PM>Symmetry and topology in the electronic structure of solids 2017.03.15 49423
293 <May. 4(Wed.) 4:30 PM> 플라즈마를 이용한 표면처리 기술 2016.04.27 49499
292 <Nov.15(Wed.) 4:30 PM> Mixed metal oxide films for energy and memory device applications 2017.11.08 49516
291 <Mar. 15(Wed.) 4:30 PM>반도체 Fab Process와 물리학 전공자 2017.03.14 49564
290 <Nov.22(Wed.) 4:30 PM> Dark Side of the Universe 2017.11.15 49611
289 <June 8(Wed.) 4:30 PM> 세계와 우리나라 우주개발 도전 2016.06.01 49638
288 <April. 27(Wed.) 4:30 PM> 로봇과 함께 살아갈 미래 2016.04.22 49998
287 <May 10(Wed.) 4:30 PM>Trend and beyond of semiconductor technology (반도체 미세화 및 신기술 동향) 2017.05.04 50682
286 <Nov. 16(Wed.) 4:30 PM> Two-dimensional Chiral Materials and Topological Insulators 2016.11.10 51074
285 <Sep. 21(Wed.) 4:30 PM>광자질량의 물리학 2016.09.19 51671
284 <March. 9(Wed.) 4:30 PM>가치 있는 대학 생활이란 무엇인가? file 2016.03.07 51734
283 <Mar.13(Wed.)> Physics in Medicine: Magnetic Resonance Imaging 2019.03.07 51911
282 <March. 23(Wed.) 4:30 PM> 조선시대의 천문시계 2016.03.17 51923
281 <Oct. 5(Wed.) 4:30 PM> 국제원자력기구 (IAEA)와 핵데이터 2016.09.22 52129
280 <Nov. 23(Wed.) 4:30 PM> Dry (Plasma) etch process in Semiconductor Device 2016.11.16 52955
279 <Dec.12(Wed.)> First-principles studies of complex oxides interfaces 2018.12.05 53044
278 <Sep.19(Wed.) 4:30 PM> Superconducting Quantum Computing (초전도 양자컴퓨팅) 2018.09.12 53613
277 <Oct. 19(Wed.) 10:00 AM> Hyper-Kamiokande project -The future of neutrino physics in Japan 2016.10.12 53762
276 <Sep.12(Wed.) 4:30 PM> Functional Nanomaterials for Energy Harvesting 2018.09.05 54173