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
236 2022-01-18 14:00    Data-driven interrogation of biological dynamics: from subcellular interactions to neuronal networks in vivo file
235 2022-01-25 15:00    Emulating twisted double bilayer graphene with a multiorbital optical lattice file
234 2022-01-26 13:00    An Introduction to Cohomology groups file
233 2022-02-28 16:00    Spin-based training of optical microscopes
232 2022-03-07 16:00    Climate Physics and Modelling(우리말강의)
231 2022-03-14 16:00    Quantitative phase imaging and artificial intelligence: label-free 3D imaging, classification, and inference
230 2022-03-18 11:00    (응집물리 세미나) Illuminating exotic states of matter: Raman spectroscopy as an experimental tool to characterize quantum spin liquids file
229 2022-03-21 16:00    Multi-wavelength Studies on Relativistic Jets from Gamma-ray Bright Active Galactic Nuclei
228 2022-03-25 11:00    (응집물리 세미나) Hund's metallicity in ruthenate systems file
227 2022-03-28 16:00    Ultimate-density atomic semiconductor via flat bands
226 2022-03-29 10:00    Non-reciprocal phase transitions file
225 2022-03-31 10:00    Weiss fields for Quantum Spin Dynamics file
» 2022-03-31 16:00    (광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials
223 2022-04-01 16:00    High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
222 2022-04-04- 16:00    New paradigms in Quantum Field Theory
221 2022-04-08 11:00    (응집물리 세미나) Flat-surface-assisted physical phenomena occurring in single crystal metal thin film file
220 2022-04-11 16:00    Emergence of Statistical Mechanics in Quantum Systems
219 2022-04-13 10:30    Harnessing topology and correlations from singularities in 3d-kagome metals
218 2022-04-14 16:00    (광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency
217 2022-04-15 11:00    (응집물리 세미나) First-principles studies of polar oxides and their applications file