visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-03-31 16:00 
연사  
장소 online 
* Title:  Ultrafast time-resolved spectroscopy in topological materials
 
* Speaker: 최현용 (서울대학교 물리천문학부)
 
* Date: 4pm, 31th March
 
 
* Abstract
In this seminar, I will talk about how the extremely fast light, called “ultrafast” laser, is used to investigate the time-resolved phenomena in topological quantum materials. The key players are all optical spectroscopy, optical Stark (Floquet) spectroscopy, and terahertz (THz) spectroscopy. Followed by an introduction about the ultrafast spectroscopy, focus will be made on the following topics. (i) Non-excitonic valley Hall effect in a heterostructure consisted of a monolayer TMD and 2D topological insulator. (ii) Optical Stark effect in a gate-tunable WSe2 device, where we investigate the repulsive and attractive exiton-polarons. (iii) Finally, if time is permitted, I will introduce our THz-pump and THz-probe investigations on the transient dynamics of 3D topological insulators.
번호 날짜 연사 제목
350 2017-11-03 16:00    Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
349 2022-07-14 15:00    Pure two-dimensional quantum electron liquid and its phase transition
348 2022-09-30 14:30    Putting a spin on the Josephson effect file
347 2018-04-13 10:00    Quantum meets Mechanics: from Quantum Information to Fundamental Research file
346 2019-05-01 16:00    Raman and x-ray scattering study on correlated electron systems: two case examples file
345 2022-05-25 16:00    Uncovering New Lampposts for Dark Matter: Continuum or Conformal
344 2022-05-11 16:00    Gravity as a phenomenon in quantum dynamics
343 2015-11-28 10:00    Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
342 2021-05-14 14:30    Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
341 2021-04-02 14:30    Quantum computing and entanglement generation using trapped ions and photons
340 2016-03-11 16:00    Jan. Switching handedness of of chiral solitons in Z4 topological insulators
339 2023-09-26 16:00    [High Energy Theory Seminar]A new step in interacting dark sector cosmologies
338 2019-03-29 16:00    Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
337 2018-06-18 10:00    Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms file
336 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
335 2023-02-28 11:00    Topotactic redox engineering toward novel material file
334 2022-11-10 16:00    Probing the Origin of Cosmic Infrared Background and Future Prospects with SPHEREx
333 2015-11-10 16:00    Rapid heating of matter using high power lasers
332 2015-12-01 16:00    Introducing extra dimensions to spectroscopic studies of advanced quantum materials
331 2023-04-13 11:00    [High Energy Theory Seminar]Noninvertible Gauss Law and Axions