korean english


Home > 게시판 > 세미나

아래와 같이 세미나를 개최하오니 많이 참석해 주시기 바랍니다. 아 래 제목: Atomic-scale polar oxide heterostructures: Growth and interfacial properties 연사: Dr. Ho Nyung Lee (Oak Ridge National Laboratory) 일시: 2009년 7월 17일(금) 오후 4:30 - 5:30 장소: 물리학과 세미나실(31355호실) 문의: 강원남 교수 (290-5904) 초록: The discovery of high mobility, two-dimensional electron gases formed at the interface of two insulating oxides opened a door to a fascinating new approach for realizing oxide electronics. However, the origin of the two-dimensional conductivity found in, e.g. LaAlO3/SrTiO3 is still unclear and the underlying mechanism that supports the idea is still under debate as a similar conductivity can be readily achieved by doping SrTiO3 substrates with oxygen vacancies under reduced conditions. In this seminar, I will present a summarized work on the current status of understanding the underlying mechanism and propose another growth related issue, which support the properties and behaviors observed previously from samples synthesized by pulsed laser deposition. Moreover, interfacial transport properties found in other type of oxides will be presented as a comparison, emphasizing the importance of atomic-scale stacking of oxide materials that can open a door to developing a completely new class of functional materials and to discovering novel properties and/or unobserved behaviors. In addition, as a second topic, based on Z-contrast and phase contrast imaging at the atomic scale, we found that the way to compensate depolarization field in ferroelectric materials is drastically depend on the type of material’s electronic ground states. Thus, I will discuss about the polar stability of ferroelectricity at interfaces in ferroelectric-dielectric and ferroelectric-metal heterostructures, probed by TEM with sub-angstrom resolution.
번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1079037
505 <May 10(Wed.) 4:30 PM>Trend and beyond of semiconductor technology (반도체 미세화 및 신기술 동향) 2017.05.04 56139
504 <April. 12 (Wed.) 4:30 PM>디랙물질을 통해서 본 강상관 계의 양자 홀로그래피적 조명: 2017.04.05 51239
503 <4/5(Wed.) 18:00pm> 저에너지 가속기의 활용 2017.04.05 49619
502 <4/5(Wed.) 11:00am>Adhesion forces between nanoparticles in gas-phase processes and application 2017.04.03 105788
501 <April. 5 (Wed.) 4:30 PM>Majorana quasiparticles emergent in Kitaev quantum magnets 2017.03.31 80147
500 <Mar. 29(Wed.) 4:30 PM>Search for New Elements 2017.03.22 99998
499 <Mar. 22(Wed.) 4:30 PM>Symmetry and topology in the electronic structure of solids 2017.03.15 56607
498 <Mar. 15(Wed.) 4:30 PM>반도체 Fab Process와 물리학 전공자 2017.03.14 54278
497 2017학년도 1학기 콜로퀴움 일정 2017.01.05 306754
496 <Dec. 14(Wed.) 4:30 PM>중력과 양자 얽힘 (tentative) 2016.12.07 54338
495 <12/2(Fri.) 14:00>Overview of HIMAC facility 2016.12.01 55529
494 <Dec. 7(Wed.) 4:30 PM>Mechanotransduction of cells in vitro(세포기능의 역학적 조절) 2016.11.30 82367
493 <Nov. 30(Wed.) 4:30 PM> Chiral solitons for topological informatics 2016.11.23 81322
492 <Nov. 23(Wed.) 4:30 PM> Dry (Plasma) etch process in Semiconductor Device 2016.11.16 62216
491 <Nov. 16(Wed.) 4:30 PM> Two-dimensional Chiral Materials and Topological Insulators 2016.11.10 200975
490 <Nov. 9(Wed.) 4:30 PM> 20-nm resolution imaging of brain circuitry by next-generation expansion microscopy 2016.11.02 54301
489 <Nov. 2(Wed.) 4:30 PM> 현대 우주론 이론과 관찰 (Theories and observations of modern cosmology) 2016.10.19 55540
488 <10/25(Tue.) 11:00am>Crystallization of Water under Modulating Pressures 2016.10.14 62642
487 <Oct. 19(Wed.) 10:00 AM> Hyper-Kamiokande project -The future of neutrino physics in Japan 2016.10.12 62820