|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
|200||Jun 28, 14:00||E6-2, #1322||Dr. Bongjae Kim, Dr. Sooran Kim, Dr. Jeongwoon Hwang||1st Research-exchange meeting of computational material physics|
|199||Sep. 02(Fri) 2:30 PM||E6-2(1st fl.), #1323||Dr. Yong-Hyun Kim,Graduate School of Nanoscience and Technology, KAIST||Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction|
|198||Sep. 02(Fri) 4:00 PM||E6-2(1st fl) #1323||Dr. Yong-Joo Doh, Department of Physics and Photon Science, GIST||Quantum Electrical Transport in Topological Insulator Nanowires|
|197||Jan. 17(Mon) - 21 (Fri), 2-4pm||E6-2 Room 2502||Dr. Donghui Jeong (Penn State University)||Five Lectures on Observational Probes of Dark Energy|
|196||Nov. 12 (Thu.) 4:00 PM||E6-2 1323||김영덕 (Young Duck Kim) 교수||2020 가을학기 광학분야 특별세미나|
|195||Aug. 8th (Mon), 14:00||E6-2 #2502||Prof. Soonwon Choi(MIT)||Classical Shadow Tomography for Analog Quantum Simulators|
|194||Sep. 29th(Thu), 4PM||E6-2 #1323 (1st floor)||Dr. Sangyoon Han, Department of Physics, KAIST||Large-scale Silicon Photonic MEMS Switches|
|193||June 3(Fri.) 11:00||E6-2 #1323||Prof. Gil Young Cho (Department of Physics, POSTECH)||(응집물리 세미나) Theoretical Investigation of Exotic Quantum States in Low-dimensional Materials|
|192||Oct 23 (Fri.), 14:00 PM||E6-2 #1323||Prof. Ivan Savenko (University of Science and Technology & IBS PCS)||Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime|
|191||Oct. 10(Tue) 4PM||E6-2 #1323||김성웅 교수 (성균관대학교 에너지과학과)||Discovery of New 2D Materials with Diverse Physical Properties|
|190||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|
|189||October 24 (Wed.), 10:30 AM||E6-1, Lecture Room 1501(1F)||Prof. Kerry J. Vahala||Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers|
|188||Aug.12(Fri.) 10:00AM, 2022||E6-1 #1323||Dr. Moon Jip Park (Center for Theoretical Physics of Complex Systems, IBS)||Twisted Bilayer Magnets|
|187||May 20(Fri.) 11:00||E6-1 #1323||Prof. Kwanpyo Kim (Department of Physics, Yonsei University)||(응집물리 세미나) Exploration of new polymorphs in van der Waals crystals|
|186||April 08(Fri.) 11:00||E6-1 #1323||Prof. Se-Young Jeong (Optics and Mechatronics Engineering , Pusan National University)||(응집물리 세미나) Flat-surface-assisted physical phenomena occurring in single crystal metal thin film|
|185||Mar. 25(Fri.) 11:00||E6-1 #1323||Prof. Ara Go (Department of Physics, Chonnam National University)||(응집물리 세미나) Hund's metallicity in ruthenate systems|
|184||2014/12/22, 2PM||E6, Rm1319||Prof. Changbong Hyeon (KIAS)||Dynamics of molecular motors: Power stroke vs Brownian ratchet|
|183||2016/03/07-06/13||E6, 1501||Prof. David Helfman(KAIST) 외||Physics Colloquium : 2016 Spring|
|182||2015/09/07-12/01||E6, 1501||문은국 교수(KAIST) 외||Physics Colloquium : 2015 Fall|
|181||2009/02/23-05/04||E6, 1501||안종현교수(성균관대) 외||Physics Colloquium : 2009 Spring|