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)
314 2020-10-16 14:30    Nanoscale magnetic resonance detection towards nano MRI file
313 2020-10-16 16:00    Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
312 2020-10-23 14:00    Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
311 2020-11-12 16:00    2020 가을학기 광학분야 특별세미나
310 2020-11-17 12:00    Quantum- & Nano-Photonics" 세미나 시리즈 file
309 2020-11-20 14:30    Lumpy Cooper pairs in an iron-based superconductor
308 2020-11-20 16:00    Coherent control of field gradient induced quantum dot spin qubits
307 2020-11-26 16:00    2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)
306 2020-12-02 10:00    Recent progress in Axion Dark Matter eXperiment (ADMX) technology file
305 2020-12-09 10:00    Searching for the QCD axion with the ARIADNE experiment file
304 2020-12-10 13:55    Consistency of Boltzmann equation and light dark matter from inflaton decay
303 2020-12-11 14:30    Antisymmetric interlayer exchange coupling in magnetic multilayers
302 2020-12-11 16:00    Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials
301 2020-12-23 10:00    Online workshop for Quantitative Phase Imaging file
300 2021-01-28 15:00    Topological Transport of Deconfined Hedgehogs in Magnets file
299 2021-01-28 18:00    Quantum metamaterials: concept, theory, prototypes and possible applications file
298 2021-02-02 14:30    Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
297 2021-02-15 17:00    Magnetic Cluster Octupole Domain evolutation in chiral antiferromagnets file
296 2021-02-17 09:00    석학 대중 강연 및 강의 시리즈 file
295 2021-03-02 16:00    Sensitive terahertz detection with graphene-based transistors file