장소 | online |
---|---|
일시 | 4pm, 31th March |
연사 | 최현용 (서울대학교 물리천문학부) |
* Title: Ultrafast time-resolved spectroscopy in topological materials
* Speaker: 최현용 (서울대학교 물리천문학부)
* Date: 4pm, 31th March
* Zoom address (online only): https://kaist.zoom.us/j/8750675930?pwd=azkxV2FaRTR5NVpmL2RmYmpzd0g0Zz09
* 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.
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
357 | May. 18(Wed), 4pm | E6-2. #1323 & Zoom | Dr.Heeyeon Kim (Rutgers University, Department of Physics and Astronomy) | Geometry, Algebra, and Quantum Field Theory |
356 | May. 12(Thu), 4pm | E6-2. #1323 & Zoom | Dr.Philip Chang (University of California San Diego, Department of Physics) | New frontiers of electroweak physics at the LHC |
355 | May. 11(Wed), 4pm | E6-2. #1323 & Zoom | Dr. Sunok Josephine Suh (Kavli Institute for Theoretical Physics) | Gravity as a phenomenon in quantum dynamics |
354 | 3pm, 19th May | online | Jonghee Yoon, PhD (Assistant professor, Department of Physics, Ajou University) | (광학분야 특별세미나)Development of a multimodal optical system for improved disease diagnosis |
353 | 4pm, 10th May | E6 1323 | 권혁준 (Korea Institute for Advanced Study, KIAS) | (광학분야 특별세미나)Testing quantum thermodynamics using quantum optics |
352 | 4pm, 28th April | E6 1323 | 유경식 (KAIST 전기및전자공학부) | (광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design |
351 | 4pm, 14th April | E6 1323 | 신승우 (KAIST 물리학과) | (광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency |
» | 4pm, 31th March | online | 최현용 (서울대학교 물리천문학부) | (광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials |
349 | May. 13 (Fri.), 04:00 PM | 자연과학동(E6-2) 1st fl. #1323 | Dr. Yosep Kim(Center for Quantum Information, KIST) |
High-fidelity iToffoli gate for fixed-frequency superconducting qubits
![]() |
348 | May. 13 (Fri.), 02:30 PM | Zoom webinar | Dr. Kun-Rok Jeon(Department of Physics, Chung-Ang University) |
Topological Superconducting Spintronics Towards Zero-Power Computing Technologies
![]() |
347 | Apr. 13(Wed.) 10:30Am | E6 #1323/zoom | Mingu Kang (Max Planck POSTECH Korea Research Initiative) | Harnessing topology and correlations from singularities in 3d-kagome metals |
346 | 10AM, 31th Mar. | E6 #1501/zoom | Dr. Samuel Begg (APCTP) |
Weiss fields for Quantum Spin Dynamics
![]() |
345 | Apr. 1(Fri.), 04:00 PM | Zoom webinar | Dr. Kayoung Lee (KAIST) |
High-field Electron Transport and Interaction Induced Phenomena in 2D Materials
![]() |
344 | 10AM, 29th Mar. / 13:30 PM, 30th Mar. | E6 #1501/zoom, E6 #2502/zoom | Dr. RYO HANAI (APCTP) |
Non-reciprocal phase transitions
![]() |
343 | Jan. 26th (Tue), 13:00 | E6 #1501 | Dr. Hyojin Jung (NIMS) |
An Introduction to Cohomology groups
![]() |
342 | Jan. 25th (Tue), 15:00 | E6 #1501/online | Junhyun Lee (Rutgers, the State University of New Jersey) |
Emulating twisted double bilayer graphene with a multiorbital optical lattice
![]() |
341 | Jan. 18(Tue), 2pm-3pm | KI bldg. 5th fl. Room B501 & Zoom | YoungJu Jo (Stanford University) |
Data-driven interrogation of biological dynamics: from subcellular interactions to neuronal networks in vivo
![]() |
340 | Jan. 17(Mon) - 21 (Fri), 2-4pm | E6-2 Room 2502 | Dr. Donghui Jeong (Penn State University) |
Five Lectures on Observational Probes of Dark Energy
![]() |
339 | Jan. 11th(Tue), 15:00 | E6 #1501 | Soyeun Kim(UIUC) |
Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I
![]() |
338 | Jan 12th (Wed), 11:00 AM | Zoom and E6 #1323 | Joonseok Hur (MIT) |
Spectroscopic study of trapped ions towards probing dark matter and new physics
![]() |