korean english


Home > 게시판 > 세미나

양자물질초전도연구실에서 숭실대학교 물리학과 이윤상 교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참여를 부탁 드립니다.

-오프 혼합으로 진행되는 세미나입니다.


Title: Functional rare earth ionic defects and the related phenomena

Speaker: 이  윤  상  교수님 (숭실대학교 물리학과)

Date/time: 2021. 7. 7. (Wed.) 4:30PM

○ 온라인 참여방법: 아래의 WebEx 링크 접속


Place: Natural Science 1,  Room No. 31214

Abstract: In strongly correlated electronic systems, e.g., transition metal oxides (TMOs), functional ionic defects, mainly, oxygen vacancies, have been found to play a crucial role in determining the electronic properties of TMOs and improving their functionalities by introducing charge carriers, lattice distortion, and ionic dynamics. As another functional ionic defects, we consider the doping of rare earth (RE) ions with 4f orbitals. Due the f-f transitions allowed in the visible region, the RE ions have been commonly used for applications as phosphors, lasers, and amplifiers. Since the f–f transitions are parity-forbidden, the non-inversion symmetrical character of the crystal field at the RE ions should be essential in allowing the forced electric dipole transitions. In this sense, the emission profiles of the RE ions should be strongly affected by the local structural symmetry and could be employed in probing the local lattice distortion. In this talk, I introduce several studies on the structural properties of some electronic oxides by using the emission spectroscopy on the RE ions doped to them.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1091519
558 <8/11>Cooking up elements in the universe: Recent activities at HRIBF 2009.08.11 114295
557 <6/2>백색 LED를 이용한 반도체조명에 관하여 2006.05.29 113029
556 <6/8> 액체금속 및 물의 과냉각 현상과 국소구조와의 관계 : 정전기 공중부양 기술 및 dynamic diamond anvil cell 2011.06.07 112573
555 <11/29> Kahler Inflation and WMAP7 data - a top down approach to Cosmology 2010.11.25 112507
554 <4/5(Wed.) 11:00am>Adhesion forces between nanoparticles in gas-phase processes and application 2017.04.03 112499
553 <9/26(Thu.) 4:30 pm ~ > Neutrino Physics and Dark Matter search in IBS 2019.09.24 112409
552 <1/24> Basics of Gravitational Perturbatiosn 2011.01.19 111783
551 <4/27> RENO Reactor Neutrino Experiment 2011.04.18 111310
550 2018학년도 1학기 콜로퀴움 일정 2018.01.03 111243
549 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 110760
548 <4/15(수) 오후4:30분> Who is SHE? 2015.04.08 110661
547 <10/15> An Ideal Mean-Field Transition in a Driven Interacting System 2009.09.30 110295
546 <7/17> Atomic-scale polar oxide heterostructures: Growth and interfacial properties 2009.07.13 110277
545 <1/8>Supersymmetric states in AdS/CFT 2009.01.05 110169
544 <5/30(금)> 입자물리이론 그룹 미니 워크숍 개최 안내 2014.05.29 109422
543 2017학년도 2학기 콜로퀴움 일정 2017.07.04 109186
542 <5/18> Baryons in AdS/QCD 2007.05.15 109160
541 <6/5> Bilinear Wess-Zumino term for open AdS superstring: covariant description of D-branes 2012.06.04 108764
540 <4/9> Quantum oscillations at the LHC 2014.04.03 108357
539 <11/28> Extremal Black Holes and Holographic C-theorem 2012.11.28 108313