227 citations · 1.1k across the 34 of their papers we have counts for
34 papers
Carrier-induced ferromagnetism in 2D magnetically-doped semiconductor structures
V. A. Stephanovich, E. V. Kirichenko, G. Engel +2
We show theoretically that the magnetic ions, randomly distributed in a two-dimensional (2D) semiconductor system, can generate a ferromagnetic long-range order via the RKKY intera…
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…
Reflection anisotropy experiments to study non-equilibrium dynamics of electronic nematicity
Inho Kwak, Jaeseok Son, Bumjoo Lee +4
Electronic nematicity have attracted a great deal of interest in the unconventional superconductivity research. We present an experimental method to investigate reflectivity anisot…
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…
Phonon-assisted optical excitation in the narrow bandgap Mott insulator Sr3Ir2O7
H. J. Park, C. H. Sohn, D. W. Jeong +6
We examined the temperature (T) evolution of the optical conductivity spectra of SrIrO over a wide range of 10-400 K. The system was barely insulating, exhibiting a sma…