149 citations · 374 across the 9 of their papers we have counts for
9 papers
Symmetry-Resolved Second Harmonic Generation in Quantum and Functional Materials
Xiaoyu Guo, Chang Jae Roh, Youngjun Ahn
Second harmonic generation (SHG) has evolved from a probe of noncentrosymmetric crystals into a symmetry-resolved optical method for identifying order parameters in quantum and fun…
Curvature-Controlled Polarization in Adaptive Ferroelectric Membranes
Greta Segantini, Ludovica Tovaglieri, Chang Jae Roh +12
In this study, we explore the ferroelectric domain structure and mechanical properties of PbTiO-based membranes, which develops a well-ordered and crystallographic-oriented rip…
Spontaneous breaking of mirror symmetry beyond critical doping in Pb-Bi2212
Saegyeol Jung, Byeongjun Seok, Chang jae Roh +9
Identifying ordered phases and their underlying symmetries is the first and most important step toward understanding the mechanism of high-temperature superconductivity; critical b…
Flexoelectric control of a ferromagnetic metal
Wei Peng, Se Young Park, Chang Jae Roh +16
Electric fields have played a key role in discovering and controlling exotic electronic states of condensed matter. However, electric fields usually do not work in metals as free c…
Possible persistence of multiferroic order down to bilayer limit of van der Waals material NiI
Hwiin Ju, Youjin Lee, Kwang-Tak Kim +10
Realizing a state of matter in two dimensions has repeatedly proven a novel route of discovering new physical phenomena. Van der Waals (vdW) materials have been at the center of th…
Linear magneto-electric phase in ultrathin MnPS probed by optical second harmonic generation
H. Chu, C. J. Roh, J. O. Island +7
The transition metal thiophosphates PS ( = Mn, Fe, Ni) are a class of van der Waals stacked insulating antiferromagnets that can be exfoliated down to the ultrathin limit…