|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
|공지||2019/09/18 - 12/5||Seminar Room #1323||Prof. David Schuster and etc.||Fall 2019: Physics Seminar Serises|
|공지||2019/09/02 - 12/09||Seminar Room 1501||이호성 박사 (한국표준과학연구원) and etc.||Fall 2019: Physics Colloquium|
|270||April 6 (Fri.), 10:00 AM||#2502, E6||박채연 박사||Entanglement and thermalization in many-body systems: recent progress|
|269||2015/09/15-12/08||E6, 1501||박제근 교수(서울대 물리학과) 외12명||Physics Colloquium : 2014 Fall|
|268||2016/03/11-06/09||E6-2, 1501 외||박권(KAIS) 외||Physics Seminar Serises : 2016 Spring|
|267||2015/09/07-12/01||E6, 1501||문은국 교수(KAIST) 외||Physics Colloquium : 2015 Fall|
|266||2011/09/03-12/06||E6, 1501||김용균교수(한양대) 외||Physics Colloquium : 2011 Fall|
|265||Oct. 10(Tue) 4PM||E6-2 #1323||김성웅 교수 (성균관대학교 에너지과학과)||Discovery of New 2D Materials with Diverse Physical Properties|
|264||2013/03/11-06/10||E6, 1501||강명수교수(KAIST) 외||Physics Colloquium : 2013 Spring|
|263||Jun. 14 (Tue) 4PM||Seminar Room (#2502, 2nd fl.)||Young-Sik Ra, Université Pierre et Marie Curie||Photonic quantum network based on multimode squeezed vacuums and single-photon subtraction|
|262||2012/04/02, 4PM||E6, 1501||Yong Hee Jeong||A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4|
|261||2016/09/05-12/12 4PM||Natual Scien Bldg.(E6)m #1501||Yeong Kwan Kim 외||Physics Colloquium : 2016 Fall|
|260||DEC. 26 (Wed), 04:00 PM||E6-1. 3rd fl. #3434||Y. Kim, A. Go, K. Hwang and E.-G. Moon||Informal Workshop on Topology and Correlation|
|259||July 8(Mon), 14:00||E6, #1322||T. L. M. Guedes (Univ. of Konstanz)||Ultrabroadband squeezed pulses and their relation to relativity|
|258||February 20 (Thu), 4:00 PM||#1323, E6-2||Seunghyun Khim||Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2|
|257||2016/09/29-12/13||E6-2, #1323||Sangyoon Han 외||2016 Fall, Physics Seminar Serises|
|256||2015/07/16-07/17||E6-2, 1501||Sang-Wook Cheong (Rutgers Univ.)||KAIST Physics Distinguished Lecture|
|255||Nov. 28 (Tue.), 4:00 PM||#1323 (E6-2. 1st fl.)||Samindranath Mitra, Editor at Physical Review Letters||Physics after the lab and the desk: Your work in PRL|
|254||Apr. 27, 2017 (Thu) 4:00 pm||Seminar Room(#1323, E6-2)||Prof.Donghan Lee (Chungnam National Univ.)||반도체 양자점을 이용한 단광자 광원|
|253||September 18(Wed.), 16:00PM||#1323, E6-2||Prof.David Schuster||Exploring Synthetic Quantum Matter in Superconducting Circuits|
|252||July 25(Thur.),4:00PM||E6-2, #1323||Prof.Bohm-Jung Yang||Band topology of twisted bilayer graphene|
|251||2015/10/16, 4PM||E6-2. 2nd fl. #2501||Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University)||Fluctuations of entropy production in partially masked electric circuits|