|장소||#1323 (E6-2, 1st fl.)|
|일시||April 11 (Wed), 1:30pm|
|연사||Dr. Yongsoo Yang|
Dept. of Physics and Astronomy, UCLA
Modern science and technology rely on functional materials, and the physical properties of these materials often strongly depend on defects, local disorder, nanoscale heterogeneities, and grain structures at the atomic scale. Traditional crystallography, which is reliant on periodicity, has been the main method for determining crystal structures, but cannot determine defects or other non-crystalline features. My work goes beyond crystallography. Without any prior assumption of underlying structure, atomic electron tomography (AET) is now able to locate the 3D coordinates of individual atoms with picometer precision and with elemental specificity [1-3]. I will show a variety of complex atomic structures with 3D atomic-level details; including grain boundaries, chemical order/disorder, phase boundaries, and anti-site point defects. I will further demonstrate that these experimentally determined atomic structures can be combined with quantum mechanical calculations to provide an atomic-level understanding of physical properties such as 3D strain tensors, magnetic moments and local magnetocrystalline anisotropy. Understanding the relationship between atomic structure and physical properties will open up new avenues in condensed matter physics and allow the rational design of novel materials at the atomic scale [1-2].
 Yang et al., Nature 542, 75-79 (2017).
 Xu et al., Nature Mater. 14, 1099-1103 (2015).
 Pryor*, Yang* et al., Sci. Rep. 7:10409 (2017).
Contact: Yongseop Kang, Administration Team (T.2599)
Department of Physics
|300||4. 11(월),16:00||E6, #1501||노재동교수 (서울시립대 물리학과)||Emergence of Statistical Mechanics in Quantum Systems|
|299||4. 25(월), 16:00||E6, #1501||정영욱 책임연구원 (한국원자력연구원)||Ultrafast electron beam, a tool to explore the nanoscopic world of materials(우리말강의)|
|298||4. 4(월), 16:00||E6, #1501||김희철교수 (Postech 물리학과)||New paradigms in Quantum Field Theory|
|297||4pm, 10th May||E6 1323||권혁준 (Korea Institute for Advanced Study, KIAS)||(광학분야 특별세미나)Testing quantum thermodynamics using quantum optics|
|296||4pm, 14th April||E6 1323||신승우 (KAIST 물리학과)||(광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency|
|295||4pm, 26th May||E6 1323||황민수 (Department of Physics, Korea University)||(광학분야 특별세미나)Topological photonic devices|
|294||4pm, 28th April||E6 1323||유경식 (KAIST 전기및전자공학부)||(광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design|
|293||4pm, 31th March||online||최현용 (서울대학교 물리천문학부)||(광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials|
|292||4pm, Sep. 21 (Wed.||E6-2. #2502(2nd fl.)||Dr. Henrik Johannesson , University of Gothenburg (Sweden) and Beijing Computational Science Research Center (China)||Entanglement probe of two-impurity Kondo physics|
|291||4월 18일(월), 15:30~||KI빌딩(E4), 강의실 B501 (5F)||Prof. Robert A. DiStasio Jr. (Cornell University)||First Principles Approaches for Intermolecular Interactions: From Gas-Phase Dimers to Liquid Water and Molecular Crystal Polymorphism|
|290||5. 2(월),16:00||E6, #1501||유상운교수 (한밭대)||What can we learn from the history of science and technology?(우리말강의)|
|289||5. 23(월),16:00||E6, #1501||김준성교수 (postech 물리학과)||Novel electronic transport in topological van der Waals magnets|
|288||5. 30(월), 16:00||E6, #1501||공수현교수 (고려대학교 물리학과)||Light manipulation using 2D layered semiconductors|
|287||5. 9(월),16:00||E6, #1501||김창영교수 (서울대)||Searching for new electronic properties in correlated material flatland|
|286||5.16(월),16:00||E6, #1501||조규붕교수 (HKUST)||Design synthetic topological matter with atoms and lights|
|285||5월 17일(화), 11:00 ~ 12:00||창의학습관(E11), 406호||방준혁 박사(Korea Basic Science Institute, KBSI)||The CERN Resonant WISP Search: Development, Results and Lesson-Learned|
|284||5월27일(목) 오후4시||온라인||박소현 박사(CERN) / 이혜성 교수(KAIST)||찾아가는 물리연구 현장(유럽 입자물리학연구소 소개)|
|283||7월 29일(목) 오후 2시 ~ 오후 4시||Online seminar||Dr. Kunio Kaneta(KIAS)||Gravitationally Induced Dark Sector and Inflationary Dynamics|
|282||8/19 (Mon), 10:00~11:30, 8/22 (Thur), 10:00~11:30||Rm. 1322, E6-2||Nicolas Treps||Tutorials on Multimode Quantum Optics in the Continuous Variable Regime|
|281||Apr. 01 (Fri.) 2:30 PM||E6-2. 1st fl. #1501||Dr. KICHEON KANG, Chonnam National University||Interference of single charged particles without a loop and dynamic nonlocality|