visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-08-18 10:00 
일시 Aug.18 (Thr), 10:00 AM 
장소 E6-1 #1323 
연사 Dr. Kyoung-Min Kim (Center for Theoretical Physics of Complex Systems, IBS) 
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 장소 제목
424 2019-12-03 16:00  #1323, E6-2  Toward Quantum Materials with Correlated Oxides file
423 2016-04-01 16:15  E6-2. 1st fl. #1501  Cotunneling drag effect in Coulomb-coupled quantum dots
422 2015-08-03 10:30  E6-2, #1323 (Seminar Room)  Axion Search
421 2016-11-04 13:30  E6-2. #1323(1st fl.)  Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications
420 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
419 2018-12-07 16:00  E6-2. 1st fl. #1323  Novel probes of interacting electrons in 2D systems file
418 2019-09-27 14:30  E6-2. 1st fl. #1323  Spin-charge conversion in topological insulators for spintronic applications file
417 2022-11-04 16:30  Zoom  초세대 협업연구실 Quantum- & Nano-Photonics_Multifunctional neural probes with integrated nanophotonics file
416 2019-11-01 16:00  E6-2. 1st fl. #1323  Electron transport through weak-bonded contact metal with low dimensional nano-material file
415 2024-06-12 13:30  E6, #1501  Competition between superconductivity and density waves in spin-degenerate and spin-orbit-coupled Bernal bilayer graphene
414 2017-07-14 15:00  #1323 (E6-2. 1st fl.)  Chiral anomaly in disordered Weyl semimetals file
413 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
412 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
411 2015-12-17 11:00  E4(KI Building), Matrix Hall (2nd fl.)  Wavefront engineering for in-vivo Deep brain imaging
410 2022-12-20 16:00  E6-2.1st fl. #1323 & zoom  Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
409 2016-10-18 15:00  E6-2. 1st fl. #1323  “Hybrid quantum systems with mechanical oscillators”
408 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
407 2015-11-24 16:00  E6-2, #1323  Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
406 2022-04-01 16:00  Zoom webinar  High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
405 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file