202 citations · 414 across the 15 of their papers we have counts for
15 papers
Keldysh space control of charge dynamics in a strongly driven Mott insulator
Xinwei Li, Honglie Ning, Omar Mehio +7
The fate of a Mott insulator under strong low frequency optical driving conditions is a fundamental problem in quantum many-body dynamics. Using ultrafast broadband optical spectro…
Revealing Charge Carrier Dynamics and Transport in Te-Doped GaAsSb and GaAsSbN Nanowires by Correlating Ultrafast Terahertz Spectroscopy and Optoelectronic Characterization
Long Yuan, Rabin Pokharel, Shisir Devkota +6
Recent advances in the growth of III-V semiconductor nanowires (NWs) hold great promise for nanoscale optoelectronic device applications. Recently, it was found that a small amount…
Ultrafast signatures of spin and orbital order in antiferromagnetic -SrCrO
Min-Cheol Lee, Connor Occhialini, Jiarui Li +6
We used femtosecond optical spectroscopy to study ultrafast spin and orbital ordering dynamics in the antiferromagnetic Mott insulator -SrCrO. This chromate system posse…
High Entropy Oxide Relaxor Ferroelectrics
Yogesh Sharma, Min-Cheol Lee, Krishna C. Pitike +13
Relaxor ferrolectrics are important in technological applications due to a strong electromechanical response, energy storage capacity, electrocaloric effect, and pyroelectric energ…
Nematic response revealed by coherent phonon oscillations in BaFeAs
Min-Cheol Lee, Inho Kwak, Yeongseon Lee +5
We investigate coherent phonon oscillations of BaFeAs using optical pump-probe spectroscopy. Time-resolved optical reflectivity shows periodic modulations due to c…
Direct Observation of Coherent Longitudinal and Shear Acoustic Phonons in TaAs Using Ultrafast X-ray Diffraction
Min-Cheol Lee, N. Sirica, S. W. Teitelbaum +18
Using femtosecond time-resolved X-ray diffraction, we investigated optically excited coherent acoustic phonons in the Weyl semimetal TaAs. The low symmetry of the (112) surface pro…
Coherent Helicity-Dependent Spin-Phonon Oscillations in the Ferromagnetic van der Waals Crystal CrI3
P. Padmanabhan, F. L. Buessen, R. Tutchton +9
The discovery of two-dimensional (2D) systems hosting intrinsic long-range magnetic order represents a seminal addition to the rich physical landscape of van der Waals (vdW) materi…
Photocurrent-driven transient symmetry breaking in the Weyl semimetal TaAs
N Sirica, P. P. Orth, M. S. Scheurer +23
Symmetry plays a central role in conventional and topological phases of matter, making the ability to optically drive symmetry change a critical step in developing future technolog…
Ultrafast dynamics in the Lifshitz-type 5 pyrochlore antiferromagnet CdOsO
Inho Kwak, Min-Cheol Lee, Byung Cheol Park +7
We investigate the ultrafast dynamics of CdOsO, a prototype material showing a Lifshitz-type transition as a function of temperature. In the paramagnetic metallic state…
Evidence of structural evolution in Sr2RhO4 studied by time-resolved optical reflectivity spectroscopy
Min-Cheol Lee, Inho Kwak, Choong H. Kim +7
We investigate ultrafast dynamics from photoinduced reflectivity of Sr2RhO4 by using femtosecond near-infrared pulses. We observe a clear temperature-dependent anomaly in its elect…
Revealing electrically undetectable room temperature surface-mobility of bulky topological insulators by spectroscopic techniques
Bumjoo Lee, Jinsu Kim, Jonghyeon Kim +11
High surface-mobility, which is attributable to topological protection, is a trademark of three-dimensional topological insulators (3DTIs). Exploiting surface-mobility indicates su…
Abnormal flip in coherent phonon oscillations of CaRuO
Min-Cheol Lee, Choong H. Kim, Inho Kwak +9
We employ an optical pump-probe technique to study coherent phonon oscillations in CaRuO. We find that oscillation-amplitude of an symmetric phonon mode is strongly s…
Strong spin-phonon coupling unveiled by coherent phonon oscillations in Ca2RuO4
Min-Cheol Lee, Choong H. Kim, Inho Kwak +8
We utilize near-infrared femtosecond pulses to investigate coherent phonon oscillations of Ca2RuO4. The coherent Ag phonon mode of the lowest frequency changes abruptly not only it…
Charge-spin correlation in van der Waals antiferromagenet NiPS3
So Yeun Kim, Tae Yun Kim, Luke J. Sandilands +13
Strong charge-spin coupling is found in a layered transition-metal trichalcogenide NiPS3, a van derWaals antiferromagnet, from our study of the electronic structure using several e…
Induced ferromagnetic moment at the interface between epitaxial SrRuO film and SrRuO single crystal
Seung Ran Lee, Muhammad Shahbaz Anwar, Yeong Jae Shin +6
SrRuO (SRO113) is an important material for device physics particularly as one of the best metallic oxide electrodes for ferroelectric devices. This oxide has moderate electron…