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 1091264
302 <Dec. 9(Fri.)>Confirming Topological Materials by ARPES 2022.12.02 19
301 <Dec. 20(Tue.)>Studying TeV Gamma-Ray Microquasars with the HAWC Observatory 2022.12.01 27
300 <Nov. 21(Mon.)> Strong magneto-elastic coupling observed in ultrafast lattice dynamics of SrRuO3 based superlattices 2022.11.15 41
299 <Nov. 11(Fri.)> Nonvanishing anomalous Hall effect in Mn3Al- compensated ferrimagnetic Heusler compound 2022.11.08 96
298 <Nov. 11(Fri.)> On the origin of CDW in two-dimensional materials 2022.11.04 91
297 <Nov. 3(Thu.)>Terahertz Spectroscopy of Quantum Materials 2022.10.31 4426
296 <July 8(Fri.)>Intertwined magnetism and charge density wave in a kagome metal 2022.06.03 1923
295 <May. 10(Tue.)>Longitudinal magnon decay in the quasi-two-dimensional antiferromagnet in Ba2FeSi2O7 2022.05.09 2265
294 <May. 3(Tue.)>Anomalous Hall signatures of nonsymmorphic nodal lines in the doped chromium chalcospinel CuCr2Se4 2022.04.19 2470
293 <Jan. 27(Thu.)>Emulating twisted double bilayer graphene with a multiorbital optical lattice 2022.01.18 3315
292 <Nov. 29(Mon.)>Exploring light-matter interactions at atomic scale using electron microscopy 2021.11.22 10152
291 <Nov. 5(Fri.)>Strongly Coupled Moire Photonics 2021.11.01 51146
290 <Aug. 4(Wed.)>Electronic Properties of Mixed-dimensional 2D/3D Heterostructures 2021.08.04 87531
289 <Aug. 6(Fru.)> Gravitationally probing dark matter (DM) microphysics 2021.08.03 38456
288 <July 21(Wed.)> Strongly Correlative Ionics 2021.07.19 34874
287 <July 14(Wed.)> B1g phonon anomaly driven by Fermi surface instability at intermediate temperature in YBa2Cu3O7−δ 2021.07.13 47545
» <July 7(Wed.)>Functional rare earth ionic defects and the related phenomena 2021.07.02 122217
285 <June 30(Wed.)>Mapping of magnetic anisotropy for van der Waals materials 2021.06.25 93423
284 <June 23(Wed.)>Valley Polarization and Exciton Hall Effect in Transition Metal Dichalcogenides 2021.06.22 34537
283 <June 10(Thu.)>Oxide electronics utilizing spin-orbit coupling 2021.05.31 168122