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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1058980
326 <May.1(Wed.)> Introduction of AMS Application 2019.04.24 63193
325 <April.17(Wed.)> Emerging Artificial Synapse for Learning- and Energy-Efficient Neuromorphic System 2019.04.11 120408
324 <April.10(Wed.)> 자성 반데르발스 물질 발견과 전망(Discovery and Perspective of magnetic van der Waals materials) 2019.04.04 47021
323 <April.3(Wed.)> 전자구조계산을 이용한 새로운 양자물질 연구 2019.03.27 45695
322 <Mar.27(Wed.)> Ultrafast Movie Maker for Photo-induced Dynamics: Ultrafast Electron Microscope 2019.03.20 85574
321 <Mar.20(Wed.)> Connecting Thermoelectricity and Superconductivity by Pressure Bridge 2019.03.13 54397
320 <Mar.13(Wed.)> Physics in Medicine: Magnetic Resonance Imaging 2019.03.07 60865
319 2019학년도 1학기 콜로퀴움 일정 2019.01.08 125499
318 <Dec.12(Wed.)> First-principles studies of complex oxides interfaces 2018.12.05 63726
317 <Dec.5(Wed.)> 두 펄사 이야기 2018.11.28 160132
316 <Nov.21(Wed.) 4:30 PM> 핵물리학과 RAON 2018.11.15 45236
315 <Nov.14(Wed.) 4:30 PM> Status and Prospects for the IceCube Neutrino Observatory 2018.11.07 75259
» <Nov.7(Wed.) 4:30 PM> Hidden-in-bulk Phase Transitions in Artificial Quantum Materials 2018.10.31 91753
313 <Oct.31(Wed.) 4:30 PM> 산업에서 활용되는 수학의 세계, 산업수학이란? 2018.10.22 42676
312 <Oct.17(Wed.) 4:30 PM> CMS 실험에서의 Machine Learning활용 2018.10.12 43268
311 <Oct.10(Wed.) 4:30 PM> Standard Model of Cosmology and Beyond 2018.09.21 103957
310 <Sep.19(Wed.) 4:30 PM> Superconducting Quantum Computing (초전도 양자컴퓨팅) 2018.09.12 62178
309 <Sep.12(Wed.) 4:30 PM> Functional Nanomaterials for Energy Harvesting 2018.09.05 81378
308 2018학년도 2학기 콜로퀴움 일정 2018.07.03 138804
307 <May.30(Wed.) 4:30 PM> 구리산화물 고온 초전도체의 특성과 응용 2018.05.23 44772