“Tilt engineering of 4d and 5d transition metal oxides?”
2016.10.06 18:55
장소 | E6-2. #1323(1st fl.) |
---|---|
일시 | Oct. 07 (Fri), 4:00 PM |
연사 | Dr. Choong Hyun Kim,IBS-CCES, Seoul National University |
“Tilt engineering of 4d and 5d transition metal oxides?”
Oct. 07 (Fri), 4:00 PM, E6-2. #1323(1st fl.)
Dr. Choong Hyun Kim,IBS-CCES, Seoul National University
Functional octahedral tilting has become a novel concept in multifunctional perovskite oxides, showing great potential for property manipulation and device design. Strong coupling between spins, orbitals and lattices in transition metal oxides are responsible for these features. Fundamental understanding of such phenomena requires detailed microscopic information on each physical degree of freedom for different physical qualities of spin, orbital, and lattice. In this presentation, we discuss spin-orbital-lattice cross-coupling phenomena in layered 4d ruthenates and 5d iridates. At first, single-layer ruthenates, Sr_{2-x}Ca_{x}RuO4 have interesting phase diagram including unconventional superconductor, metal-insulator transition, spin and orbital ordering. And these are strongly coupled to octahedral tilting distortion. Here we report interesting experimental observations including THz pump-probe optical spectroscopy and ARPES. Secondly, we will focus on control of magnetism in single-and bi-layer iridates via structural distortion. Due to its exotic nature of magnetism in iridates, they are strongly coupled to structural distortion and we can control and even induce spin flop or magnetization reversal phenomena in this series of compounds.
Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
104 | Apr. 28 (Thu.) 3PM | #2501(E6-2. 2nd fl.) | Dr. Chang Hee Sohn, SEOUL NATIONAL UNIVERSITY | Lattice/Spin/Charge Coupling in 5d Pyrochlore Cd2Os2O7 |
103 | Oct. 17th (Mon) 11:00 AM | #1323,(E6-2, 1st fl.) | Nguyen Quang Liem, Institute of Materials Science, VAST, Viettnam | IMS and examples of the studies on optoelectronic materials |
102 | October 4 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Soo Jin Kim |
Engineering light absorption in an ultrathin semiconductor metafilm
![]() |
101 | May 30 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Chang-Hee Cho |
Tuning the excitonic properties of semiconductors with light-matter interactions
![]() |
100 | April 11 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Joo-Hyoung Lee, GIST |
Massive screening for cathode active materials using deep neural network
![]() |
99 | October 11 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Joung-Real Ahn |
Dirac electrons in a graphene quasicrystal
![]() |
98 | May 24 (Fri.), 16:00 PM | #1323, E6-2 | Prof. Soonjae Moon |
Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates
![]() |
97 | May 31 (Fri.), 11:00 AM | #1323, E6-2 | Prof. Guido Burkard |
Cavity QED with Spin Qubits
![]() |
96 | October 19 (Fri.), 10:00 AM | #1323, E6-2 | Dr. Jongsoo Yoo |
Energy conversion processes during magnetic reconnection in a laboratory plasma
![]() |
95 | October 15 (Mon.), 16:00 PM | #1323, E6-2 | Dr. Yongjoo Baek |
Universal properties of macroscopic current-carrying systems
![]() |
94 | October 25 (Thu.), 4:00 PM | #1323, E6-2 | Dr. Gang Li |
Abelian and non-Abelian dark photons
![]() |
93 | May 9 (Wed.), 04:00 PM | #1323, E6-2 | Prof. Jong-Soo Rhyee |
Recent advances in thermoelectric bulk composites
![]() |
92 | June 4 (Tue.), 5:00 PM | #1323, E6-2 | Prof. Minsu Kim |
Stochastic nature of bacterial eradication using antibiotics
![]() |
91 | October 15 (Tue.), 16:00 PM | #1323, E6-2 | Prof. Pilkyung Moon |
Moiré superlattices and graphene quasicrystal
![]() |
90 | May. 8th (Wed), 16:00 | E6 Room(#1323) | Jieun Lee |
Imaging valley dependent electron transport in 2D semiconductors
![]() |
89 | May 9 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Kwang Geol Lee |
Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters
![]() |
88 | May 9 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Kwang Geol Lee |
Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters
![]() |
87 | May 311 (Thu.), 04:00 PM | #1323, E6-2 | Prof. Teun-Teun Kim |
Dynamic control of optical properties with gated-graphene metamaterials
![]() |
86 | November 1 (Thu.), 16:00 PM | #1323, E6-2 | Dr. KyeoReh Lee |
Direct holography from a single snapshot
![]() |