visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-10-07 16:00 
연사  
장소 E6-2. #1323(1st fl.) 

“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 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
445 2016-03-11 13:30    Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder
444 2018-11-01 16:00    Direct holography from a single snapshot file
443 2022-08-18 10:00    Disorder-driven phase transition in the second-order non-Hermitian skin effect
442 2023-04-27 11:00    Inverse Shapiro steps and coherent quantum phase slip in superconducting nanowires
441 2015-07-16 16:00    Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
440 2018-10-26 16:00    Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
439 2017-03-24 14:30    Topological Dynamics
438 2015-10-15 10:00    Development of Large-Bore, High Field Magnets at the NHMFL
437 2023-06-22 16:00    [CAPP Seminar] The muon g-2 puzzle file
436 2016-05-19 15:00    The CERN Resonant WISP Search: Development, Results and Lesson-Learned
435 2016-07-08 11:00    Isostatic magnetism
434 2015-11-23 13:30    What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
433 2017-02-01 14:00    Quantum electron optics using flying electrons
432 2019-09-10 15:00    Two-Stage Kondo Effect file
431 2017-11-03 14:30    Quantum Resistor-Capacitor Circuit with Majorana Edge States file
430 2019-07-30 16:00    Dirac fermions and flat bands in correlated kagome metals file
429 2023-07-11 11:00    Ordered phases, non-Fermi liquid, and quantum criticality driven by entanglement between multipoles and conduction electrons
428 2017-04-28 16:00    Carbon nanotubes coupled to superconducting impedance matching circuits
427 2016-09-29 16:00    Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?
426 2019-06-12 15:00    The relation between free and interacting fermionic SPT phases file