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 28181
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 975015
680 <May 18(Wed.)>Magnetoresistance and Hall effects of Fe5Sn3 single crystals 2022.05.12 318
679 <May 11(Wed.)>Key Nuclear Experimental Studies to Find the Origin of Elements 2022.05.04 408
678 <May. 10(Tue.)>Longitudinal magnon decay in the quasi-two-dimensional antiferromagnet in Ba2FeSi2O7 2022.05.09 415
677 <May 4(Wed.)>Recent progress in the study of topological phases of matter 2022.04.27 527
676 <Apr. 27(Wed.)> I) A few first questions by me. II) ‘Topotactic resistance switching RAM’의 최초 발견 2022.04.20 539
675 <May. 3(Tue.)>Anomalous Hall signatures of nonsymmorphic nodal lines in the doped chromium chalcospinel CuCr2Se4 2022.04.19 587
674 <Apr. 20(Wed.)> 반도체 공정용 플라즈마 물리 2022.04.14 614
673 <Apr. 6(Wed.)> Holographic Flat Panel Displays 2022.03.30 922
672 <Mar. 30(Wed.)> Two-dimensional Semiconductors and their applications 2022.03.23 964
671 <Mar. 16(Wed.)> 현세대/차세대 이차전지 기술 동향 및 전망 2022.03.02 967
670 <Mar. 2(Wed.)>Introduction to high-energy nuclear physics 2022.02.24 1022
669 <Jan. 27(Thu.)>Emulating twisted double bilayer graphene with a multiorbital optical lattice 2022.01.18 1425
668 <Mar. 23(Wed.)> Next-generation artificial intelligence devices and physics 2022.03.16 2005
667 <Nov. 17(Wed.)>펜로즈의 삼각형과 블랙홀 - 부분과 전체 2021.11.11 2858
666 <Nov. 29(Mon.)>Exploring light-matter interactions at atomic scale using electron microscopy 2021.11.22 3750
665 <Sep. 15(Wed.)> 강화학습 - 시행착오를 통해 배워나가는 인공지능 2021.09.08 3916
664 <Nov. 10(Wed.)>Optical Spectroscopy of 2-Dimensional Materials 2021.11.03 4033
663 <Oct. 6(Wed.)> 블랙홀에서 쌍꺼풀수술까지 2021.09.29 4730
662 <Nov. 3(Wed.)>시공간의 구조: 상대성이론, 특이점, 우주상수 2021.10.28 7623
661 <April 21(Wed.)> 우주배경복사 편광 관측 - 남극점 기지 바이셉/켁 어레이(BICEP/Keck Array) 망원경 2021.04.12 8244