|일시||Jan. 11th(Tue), 15:00|
“Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I”
Department of Physics,
Univ. Illinois at Urbana-Champaign (UIUC)
Jan. 11th (Tue), 15:00, E6 #1501
(TaSe4)2I provides an excellent platform to explore topology, lattice, and charge degrees of freedom. It is a non-magnetic Weyl semimetal with a quasi-1D charge-density wave phase transition (TC ~ 260 K) on its structurally chiral lattice. Because the pairs of Weyl fermions are coupled by a CDW modulation, the phase part of the CDW collective mode is suggested to follow the axion electrodynamics described by θE·B [1,2]. As a result, exciting phenomena such as negative magnetoresistance, quantized photogalvanic and piezomagnetic effects have been proposed [1,3,4]. In this talk, we will investigate the CDW collective modes of (TaSe4)2I using ultrafast optical tools of THz emission and THz-pump birefringence spectroscopy. The experimental results will be discussed and compared to the theoretically suggested magnetoelectric effects in the Weyl-CDW system.
 J. Gooth et al., Nature 575, 315 (2019).
 W. Shi et al., Nat. Phys. 17, 381 (2021).
 D. M. Nenno et al., Nat. Rev. Phys. 2, 682 (2020).
 Yu et al., Phys. Rev. B 104, 174406 (2021).
Contact: Eunjung Jo, (firstname.lastname@example.org)
|328||July 8(Mon), 14:00||E6, #1322||T. L. M. Guedes (Univ. of Konstanz)||Ultrabroadband squeezed pulses and their relation to relativity|
|327||June 23th (Thur), 11:00||E6 Room(#1322)||Sun Yool Park(Joint Institute for Laboratory Astrophysics (JILA) & University of Colorado)||JILA’s search for the electron’s Electric Dipole Moment (eEDM) to probe physics beyond the standard model|
|»||Jan. 11th(Tue), 15:00||E6 #1501||Soyeun Kim(UIUC)||Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I|
|325||February 20 (Thu), 4:00 PM||#1323, E6-2||Seunghyun Khim||Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2|
|324||2016/09/29-12/13||E6-2, #1323||Sangyoon Han 외||2016 Fall, Physics Seminar Serises|
|323||Nov. 2(Tue) 04:00pm||자연과학동(E6-2) #1323||Sangjin Lee(IBS-CALDES)||Metrology of Band Topology via Resonant Inelastic X-ray Scattering|
|322||2015/07/16-07/17||E6-2, 1501||Sang-Wook Cheong (Rutgers Univ.)||KAIST Physics Distinguished Lecture|
|321||Nov. 28 (Tue.), 4:00 PM||#1323 (E6-2. 1st fl.)||Samindranath Mitra, Editor at Physical Review Letters||Physics after the lab and the desk: Your work in PRL|
|320||April 15(Fri.) 11:00||Online seminar||Prof.Jaekwang Lee (Department of Physics, Pusan National University)||(응집물리 세미나) First-principles studies of polar oxides and their applications|
|319||Apr. 27, 2017 (Thu) 4:00 pm||Seminar Room(#1323, E6-2)||Prof.Donghan Lee (Chungnam National Univ.)||반도체 양자점을 이용한 단광자 광원|
|318||September 18(Wed.), 16:00PM||#1323, E6-2||Prof.David Schuster||Exploring Synthetic Quantum Matter in Superconducting Circuits|
|317||July 25(Thur.),4:00PM||E6-2, #1323||Prof.Bohm-Jung Yang||Band topology of twisted bilayer graphene|
|316||2015/10/16, 4PM||E6-2. 2nd fl. #2501||Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University)||Fluctuations of entropy production in partially masked electric circuits|
|315||Nov. 1 (Tue.) 2:30 pm||Seminar Room #1323(E6-2)||Prof. Youngjoon Kwon, Yonsei Univ.||Search for dark sector particles in the B-factory experiments|
|314||April 6, 2017 (Thu), 4:00 pm||IBS CAPP seminar room, Creation Hall (3F), KAIST Munji Campus||Prof. Youngjoon Kwon (Yonsei University)||For whom the Belle tolls|
|313||Dec.23(Wed), 10:00~16:00||Online||Prof. YongKeun Park (KAIST) and etc.||Online workshop for Quantitative Phase Imaging|
|312||2015/10/23-12/4 10:30 AM||E6, #1501||Prof. YongKeun Park & Prof. Tae-Young Yoon||How to write a good scientific paper[Open lecture series]|
|311||May. 17 (Thu.), 01:30 PM||E6-2. 1st fl. #1323||Prof. Yong-Baek Kim University of Toronto||Quantum Spin Liquid in Kitaev Materials|
|310||Sep. 13 (Wed.), 4 PM||#1323 (E6-2. 1st fl.)||Prof. Yi. Zhou (The Zhejiang Univ.)||An Introduction to Quantum Spin Liquids|
|309||Sep. 12 (Tue.), 4 PM||#1323 (E6-2. 1st fl.)||Prof. Yi. Zhou (The Zhejiang Univ.)||Exact Solution for the Interacting Kitaev Chain at Symmetric Point|