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
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
433 2018-10-04 16:00    Engineering light absorption in an ultrathin semiconductor metafilm file
432 2018-10-11 16:00    Dirac electrons in a graphene quasicrystal file
431 2018-10-12 14:30    Quantum Advantage in Learning Parity with Noise file
430 2018-10-12 16:00    Direct observation of a two-dimensional hole gas at oxide interfaces file
429 2018-10-15 16:00    Universal properties of macroscopic current-carrying systems file
428 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
427 2018-10-18 10:00    Understanding membrane protein folding using single-molecule force techniques file
426 2018-10-18 16:00    Applications of nonlinear optics for condensed matter researches file
425 2018-10-19 10:00    Energy conversion processes during magnetic reconnection in a laboratory plasma file
424 2018-10-24 10:30    Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
423 2018-10-25 16:00    Abelian and non-Abelian dark photons file
422 2018-10-26 16:00    Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
421 2018-11-01 16:00    Direct holography from a single snapshot file
420 2018-11-08 16:00    Conformality lost file
419 2018-11-09 14:30    Moiré superlattices – from twisted bilayer graphene to quasicrystal file
418 2018-11-09 16:00    Quantum sensing and imaging with diamond defect centers for nano-scale spin physics file
417 2018-11-21 15:00    Engineering topological quantum physics at the atomic scale file
416 2018-11-22 15:00    Experimental and Computational Study on Physical Properties based on Granular System file
415 2018-11-23 15:00    Entanglement string and Spin Liquid with Holographic duality file
414 2018-11-29 16:00    양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file