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
476 2023-06-22 16:00    [High Energy Physics Seminar] The Branes Behind Generalized Symmetry Operators
475 2023-06-16 13:00    Quantum critical states under extreme conditions
474 2023-06-15 16:00    [CAPP Seminar] Cryogenic electronics for ion traps file
473 2023-06-14 16:00    [CAPP seminar] EMC at CERN file
472 2023-06-14 16:00    [High-Energy Theory Seminar]Vertex algebras and extended operators in 4d N=2 SCFTs
471 2023-06-08 16:00    Thermal decoupling in high-Tc cuprate superconductors
470 2023-06-01 16:00    Hall viscosity and topological phenomena
469 2023-06-01 16:00    (광학분야 세미나)Quantum sensing using a squeezed light from hot Rb vapor
468 2023-05-31 16:00    [High-Energy Theory Seminar] Resurgence and complex Chern-Simons theory
467 2023-05-26 11:00    (응집물리 세미나)Spectral Analyses of Stochastic Charge Trapping in Oxide Heterostructures file
466 2023-05-22 13:00    Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
465 2023-05-19 11:00    (응집물리 세미나)Dipole condensations in Tilted Bose-Hubbard Chains
464 2023-05-18 16:00    (광학분야 세미나)Dielectric metasurfaces for optimized optical system and spatial light modulators
463 2023-05-17 16:30    Detecting Hidden Photon Dark Matter via the Excitation of Qubits file
462 2023-05-17 14:00    Optical Response in the multilayer thin films
461 2023-05-15 16:00    Role of dark Higgs boson in DM physics and cosmology file
460 2023-05-12 11:00    (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
459 2023-05-03 16:00    Probing microscopic origins of axions by the chiral magnetic effect
458 2023-04-28 11:00    Tkachenko wave: From the modern field theory viewpoint
457 2023-04-27 16:00    (광학분야 세미나)On-chip spectrometers based on CMOS image sensors