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
357 2022-03-07 16:00  E6, #1501  Climate Physics and Modelling(우리말강의)
356 2022-03-14 16:00  E6, #1501  Quantitative phase imaging and artificial intelligence: label-free 3D imaging, classification, and inference
355 2022-02-28 16:00  E6, #1501  Spin-based training of optical microscopes
354 2022-05-02 16:00  E6, #1501  What can we learn from the history of science and technology?(우리말강의)
353 2022-04-11 16:00  E6, #1501  Emergence of Statistical Mechanics in Quantum Systems
352 2022-05-23 16:00  E6, #1501  Novel electronic transport in topological van der Waals magnets
351 2022-05-09 16:00  E6, #1501  Searching for new electronic properties in correlated material flatland
350 2022-04-04- 16:00  E6, #1501  New paradigms in Quantum Field Theory
349 2022-05-16 16:00  E6, #1501  Design synthetic topological matter with atoms and lights
348 2022-05-30 16:00  E6, #1501  Light manipulation using 2D layered semiconductors
347 2015-10-23 10:30  E6, #1501  How to write a good scientific paper[Open lecture series]
346 2016-03-07 16:00  E6, 1501  Physics Colloquium : 2016 Spring file
345 2015-09-07 16:00  E6, 1501  Physics Colloquium : 2015 Fall file
344 2015-03-09 16:00  E6, 1501  Physics Colloquium : 2015 Spring file
343 2015-09-15 16:00  E6, 1501  Physics Colloquium : 2014 Fall file
342 2014-03-10 16:00  E6, 1501  Physics Colloquium : 2014 Spring file
341 2013-09-09 16:00  E6, 1501  Physics Colloquium : 2013 Fall
340 2013-03-11 16:00  E6, 1501  Physics Colloquium : 2013 Spring
339 2012-04-02 16:00  E6, 1501  A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
338 2012-02-13 16:00  E6, 1501  Physics Colloquium : 2012 Spring