visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-04-13 10:30 
연사  
장소 E6 #1323/zoom 
2022년 4월 13일(수) 오전 10시 30분 세미나 안내 
 
- Title: Harnessing topology and correlations from singularities in 3d-kagome metals
- speaker: Mingu Kang (Max Planck POSTECH Korea Research Initiative)
- location: E6 #1323/zoom
 
- 회의 ID: 871 6131 6372
- 암호: 607224
 
- abstract
    Kagome lattice is a network of corner-sharing triangles that has been studied extensively as a platform for novel quantum magnetic states. In metallic case, the symmetry of kagome lattice protects three singularities in its band structure including Dirac fermions at the Brillouin zone corner Kvan Hove singularity at the zone edge M, and flat band across the whole Brillouin zone. If properly combined with spin-orbit coupling, magnetism, and strong electronic interactions, these unique singularities in the kagome lattice represent a rich potential to realize nontrivial topological and correlated many-body ground states including Chern insulators, magnetic Weyl semimetals, fractional quantum Hall effect, chiral density waves, and unconventional superconductivity.
    In this talk, I will review the recent material realizations of such exotic electronic states in a series of 3d-transition metal-based kagome compounds. These include Dirac fermion-induced Chern insulating phase and intrinsic anomalous Hall conductivity in Fe3Sn2flat band-induced Stoner magnetism, nontrivial Z2 topology, and non-Fermi liquid behavior in (Fe,Co)Sn and Ni3In, and van Hove singularity-induced charge order in (K,Rb,Cs)V3Sb5. These successful realizations highlight 3d-kagome metals as a promising opportunity to engineer novel emergent phases of matter at the crossroad between strongly correlated physics and electronic topology.
 
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