visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-04-13 10:30 
일시 Apr. 13(Wed.) 10:30Am 
장소 E6 #1323/zoom 
연사 Mingu Kang (Max Planck POSTECH Korea Research Initiative) 
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 장소 제목
382 2018-11-09 14:30  E6-2. 1st fl. #1323  Moiré superlattices – from twisted bilayer graphene to quasicrystal file
381 2017-04-28 14:30  E6-2. 1st fl. #1323  Hot electron generation at surfaces and its impact to catalysis and renewable energy conversion
380 2018-12-11 16:00  E6-2. 1st fl. #1323  Natural compact representation of Matsubara Green’s functions: applications to analytic continuation and quantum many-body simulations file
379 2017-09-22 13:00  E6-2. 1st fl. #1323  Superconductor-metal-insulator transition in thin Tantalum films file
378 2018-10-12 14:30  E6-2. 1st fl. #1323  Quantum Advantage in Learning Parity with Noise file
377 2017-05-12 13:30  E6-2. 1st fl. #1323  Topological Dirac insulator
376 2017-09-22 14:30  E6-2. 1st fl. #1323  Quantum Electronic Transport in Graphene Hybrid Nanostructures file
375 2019-11-01 16:00  E6-2. 1st fl. #1323  Electron transport through weak-bonded contact metal with low dimensional nano-material file
374 2019-09-27 14:30  E6-2. 1st fl. #1323  Spin-charge conversion in topological insulators for spintronic applications file
373 2018-03-16 16:00  E6-2. 1st fl. #1323  Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
372 2018-03-16 16:00  E6-2. 1st fl. #1323  Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
371 2019-03-29 16:00  E6-2. 1st fl. #1323  Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
370 2019-04-19 16:00  E6-2. 1st fl. #1323  Graphene and hBN heterostructures file
369 2019-04-19 14:30  E6-2. 1st fl. #1323  A family of finite-temperature electronic phase transitions in graphene multilayers file
368 2018-12-26 16:00  E6-2. 1st fl. #1323  Brane-like defect in 3D toric code file
367 2017-06-02 14:30  E6-2. 1st fl. #1323  Quasiparticle Interference and Fourier transform scanning tunneling spectroscopy in WTe2 (Weyl semimetal) file
366 2016-04-05 16:00  E6-2. 1st fl. #1322  A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space
365 2015-09-07 15:00  E6-2. 1st fl. #1318  Advanced Optical Materials and Devices at NRL
364 2016-09-21 16:00  E6-2. #2502(2nd fl.)  Entanglement probe of two-impurity Kondo physics
363 2016-09-29 16:00  E6-2. #2501(2nd fl.)  Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?