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 1055903
681 2019학년도 2학기 콜로퀴움 일정 2019.07.17 424143
680 <12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4 2012.11.26 355426
679 <Mar.3(Wed.)>Scaling laws in Natural Language Processing 2021.02.25 311488
678 2017학년도 1학기 콜로퀴움 일정 2017.01.05 281896
677 <10/25> Wave properties of dipole-exchange spin waves in confined magnetic thin films 2006.10.25 262538
676 2020학년도 1학기 콜로퀴움 일정 2020.01.31 253056
675 <5/16> 물리학자가 바라 본 단백질: 왜, 어떻게 연구하는가? 2012.05.10 248623
674 <3/14>Adaptive Optics for the Human Eye and Ophthalmic Applications 2008.03.12 233645
673 <11/6> Graphene plasmon and Plasmonics 2013.10.31 231069
672 BK 석학초청 특별세미나 - Frustration and dimensional reduction in multi-orbital systems 2011.10.28 227273
671 <8/30(Wed.)10:30>​Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics 2017.08.29 225787
670 <6/17> Oscillating Fuzzy Sphere and M5/anti M5 configurations in ABJM model 2009.06.16 222629
669 <12/21> Special Seminar by Professor Ilya Vekhter 2010.11.30 222577
668 <6/11> Advanced Physiological Optics and Its Ophthalmic Applications 2014.05.28 222164
667 <Jan.14(Thu.)>Oxygen sponge effects for epitaxial manganite thin film design 2021.01.11 211407
666 <5/16(토)> 세미나 개최 안내 2015.05.18 205006
665 <Sep. 23(Wed.) 4:30 PM>Grain boundary effect in Metal : A journey of discovery from crystal to thin films without grain boundaries 2015.09.16 196205
664 <11/5(화)> 특별세미나 개최 안내 2013.11.01 194158
663 <June.12(Wed.)> Ribocomputing: Cellular Logic Computation using RNA Devices file 2019.06.07 193001