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)
334 2019-12-13 13:30    Biophysics Mini-symposium at KAIST file
333 2019-12-18 16:00    Road to Higher Tc Superconductivity file
332 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
331 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
330 2020-01-17 16:00    Symmetry Breaking and Topology in Superfluid 3He file
329 2020-02-12 13:00    From inflation to new weak-scale file
328 2020-02-13 16:30    Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
327 2020-02-20 16:00    Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
326 2020-07-02 16:00    An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
325 2020-08-17 20:00    Using magnetic tunnel junctions to compute like the brain file
324 2020-08-25 20:00    KAIST Global Forum for Spin and Beyond (Second Forum) file
323 2020-09-11 14:00    SRC Seminar file
322 2020-09-14 17:30    KAIST Global Forum for Spin and Beyond (Third Forum) file
321 2020-09-22 09:30    Physics and applications of soliton microcombs(Quantum- & Nano-Photonics) file
320 2020-09-24 09:00    (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU file
319 2020-09-28 17:30    KAIST Global Forum for Spin and Beyond(Fourth Forum) file
318 2020-10-09 09:00    Quantum Many-Body Simulation file
317 2020-10-15 16:00    Graphene-based Josephson junction microwave bolometer file
316 2020-10-15 16:00    Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
315 2020-10-15 17:00    Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file