|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
|392||2018년 9월 7일 (금), 3PM||학술문화관 (E9), 2층 양승택 오디토리움||Prof. Martin Head-Gordon, UC Berkeley||Recent developments in density functional theory: From new functionals to the nature of the chemical bond|
|391||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|
|390||May. 13 (Fri.), 04:00 PM||자연과학동(E6-2) 1st fl. #1323||Dr. Yosep Kim(Center for Quantum Information, KIST)||High-fidelity iToffoli gate for fixed-frequency superconducting qubits|
|389||Nov. 2(Tue) 04:00pm||자연과학동(E6-2) #1323||Sangjin Lee(IBS-CALDES)||Metrology of Band Topology via Resonant Inelastic X-ray Scattering|
|388||Dec. 13-14(Wed.-Thu.) 13:30 PM||자연과학동 대형강의실 (1501호)||장기주 교수 외 9명||KAIST-KIAS Joint Workshop in Theoretical Sciences 개최|
|387||5월27일(목) 오후4시||온라인||박소현 박사(CERN) / 이혜성 교수(KAIST)||찾아가는 물리연구 현장(유럽 입자물리학연구소 소개)|
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|384||Apr. 1(Fri.), 04:00 PM||Zoom webinar||Dr. Kayoung Lee (KAIST)||High-field Electron Transport and Interaction Induced Phenomena in 2D Materials|
|383||Sep. 14(Mon) 17:30~||Zoom webinar||Teruo Ono (Kyoto U. Japan)||KAIST Global Forum for Spin and Beyond (Third Forum)|
|382||Sep.28. 5:30 pm||Zoom webinar||Burkard Hillebrands (TU Kaiserslautern, Germany)||KAIST Global Forum for Spin and Beyond(Fourth Forum)|
|381||Sep. 22nd 9:30 AM||Zoom webinar||Prof. Xu Yi (Univ. of Virginia, USA)||Physics and applications of soliton microcombs(Quantum- & Nano-Photonics)|
|380||Aug, 25(Tue), 20:00~||Zoom webinar||Mark D. Stiles (NIST, USA)||KAIST Global Forum for Spin and Beyond (Second Forum)|
|379||Aug. 17(Mon), 20:00~||Zoom webinar||Mark D. Stiles (NIST, USA)||Using magnetic tunnel junctions to compute like the brain|
|378||Jun 8 (Tue), 10:00 AM||Zoom webinar||Toshihiko Baba (Yokohama National University, Japan)||Photonic crystal devices for sensing|
|377||Apr. 19(Mon) 19:00||Zoom webinar||Chia-Ling Chien (Johns Hopkins, USA)||Evidence of Electrical Switching in Antiferromagnets and Coherent Spin Pumping|
|376||Dec. 3 (Fri.), 04:00 PM||Zoom webinar||Dr. Hyejin Jang (Seoul National University)||Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer|
|375||May. 17(Mon) 17:00||Zoom webinar||Jing Shi (UC Riverside, USA)||Spin current generation and detection in uniaxial antiferromagnets|
|374||Dec. 3 (Fri.), 02:30 PM||Zoom webinar||Dr. Soong-Geun Je(Chonnam National University)||Topological Spin Textures: Skyrmions and Beyond|
|373||Apr. 9 (Fri.), 10:00 AM||Zoom webinar||Prof. Marko Loncar (Harvard University, USA)||Integrated Lithium Niobate Photonics|