visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-10-07 16:00 
일시 Oct. 07 (Fri), 4:00 PM 
장소 E6-2. #1323(1st fl.) 
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)

번호 날짜 장소 제목
360 2022-03-07 16:00  E6, #1501  Climate Physics and Modelling(우리말강의)
359 2022-03-14 16:00  E6, #1501  Quantitative phase imaging and artificial intelligence: label-free 3D imaging, classification, and inference
358 2022-02-28 16:00  E6, #1501  Spin-based training of optical microscopes
357 2022-05-02 16:00  E6, #1501  What can we learn from the history of science and technology?(우리말강의)
356 2022-04-11 16:00  E6, #1501  Emergence of Statistical Mechanics in Quantum Systems
355 2022-05-23 16:00  E6, #1501  Novel electronic transport in topological van der Waals magnets
354 2022-05-09 16:00  E6, #1501  Searching for new electronic properties in correlated material flatland
353 2022-04-04- 16:00  E6, #1501  New paradigms in Quantum Field Theory
352 2022-05-16 16:00  E6, #1501  Design synthetic topological matter with atoms and lights
351 2022-05-30 16:00  E6, #1501  Light manipulation using 2D layered semiconductors
350 2015-10-23 10:30  E6, #1501  How to write a good scientific paper[Open lecture series]
349 2016-03-07 16:00  E6, 1501  Physics Colloquium : 2016 Spring file
348 2015-09-07 16:00  E6, 1501  Physics Colloquium : 2015 Fall file
347 2015-03-09 16:00  E6, 1501  Physics Colloquium : 2015 Spring file
346 2015-09-15 16:00  E6, 1501  Physics Colloquium : 2014 Fall file
345 2014-03-10 16:00  E6, 1501  Physics Colloquium : 2014 Spring file
344 2013-09-09 16:00  E6, 1501  Physics Colloquium : 2013 Fall
343 2013-03-11 16:00  E6, 1501  Physics Colloquium : 2013 Spring
342 2012-04-02 16:00  E6, 1501  A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
341 2012-02-13 16:00  E6, 1501  Physics Colloquium : 2012 Spring