visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-08-18 10:00 
연사  
장소 E6-1 #1323 
1) Date / Time 
    - August 18, 2022 / 10:00 AM (KST)
 
2) Place / ZOOM 
    Room 1323, KAIST Natural Sciences Lecture Hall(E6) (자연과학동 1323호)
 
3) Speaker
    Dr. Kyoung-Min Kim (Center for Theoretical Physics of Complex Systems, IBS)
 
4) Talk Title
    Disorder-driven phase transition in the second-order non-Hermitian skin effect
 
5) Abstract
    The non-Hermitian skin effect exhibits a collapse of extended bulk modes into an extensive number of localized boundary states in the open boundary condition. Here, we demonstrate a disorder-driven phase transition of a trivial non-Hermitian system to the higher-order non-Hermitian skin effect phase. In contrast to clean systems, the disorder-induced boundary modes form an arc in the complex energy plane, which is a manifestation of the disorder-driven energy-dependent phase transition. At the phase transition, localized corner modes and bulk modes characterized by trivial Hamiltonians coexist within a single band, while they remain separated in the complex energy plane. This behavior is analogous to the mobility edge phenomena in disordered Hermitian systems. Using effective medium theory and numerical diagonalizations, we provide a systematic characterization of the disorder-driven phase transition.
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)
374 2019-07-08 14:00    Ultrabroadband squeezed pulses and their relation to relativity file
373 2019-07-10 16:00    Public Lectures file
372 2019-07-16 16:00    2019 Physics Distinguished Lecture file
371 2019-07-21 12:00    Challenges and Opportunities in Theoretical Particle Physics 2019 file
370 2019-07-25 16:00    Band topology of twisted bilayer graphene file
369 2019-07-30 16:00    Dirac fermions and flat bands in correlated kagome metals file
368 2019-07-31 16:00    Features of ballistic superconducting graphene file
367 2019-08-01 14:00    Low-density Superconductivity in SrTiO3 Probed by Planar Tunneling Spectroscopy file
366 2019-08-06 16:00    Visualization of in-plane piezoresponse vector fields file
365 2019-08-14 16:00    Quantum Optics, at the heart of quantum metrology and quantum information file
364 2019-08-16 14:00    Multiferroic and Magnetoelectric Effects by Tailoring Interfacial Chemistry and Physics in Correlated Oxides file
363 2019-08-19 10:00    Tutorials on Multimode Quantum Optics in the Continuous Variable Regime file
362 2019-08-22 16:00    Physics and Applications in Nanoelectronics and Nonomechanics file
361 2019-08-27 16:00    Critical current properties of Fe-based superconductors file
360 2019-09-02 16:00    Fall 2019: Physics Colloquium file
359 2019-09-10 15:00    (2+1) D Duality Web from 3D Euclidean Lattice file
358 2019-09-10 15:00    Two-Stage Kondo Effect file
357 2019-09-18 16:00    Exploring Synthetic Quantum Matter in Superconducting Circuits file
356 2019-09-18 16:00    Fall 2019: Physics Seminar Serises file
355 2019-09-26 16:00    Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file