455 citations · 962 across the 9 of their papers we have counts for
9 papers
Ultrafast carrier-lattice interactions and interlayer modulations of Bi2Se3 by X-ray free electron laser diffraction
Sungwon Kim, Youngsam Kim, Jaeseung Kim +20
As a 3D topological insulator, bismuth selenide (Bi2Se3) has potential applications for electrically and optically controllable magnetic and optoelectronic devices. How the carrier…
Structural Phase Transition and Interlayer Coupling in Few-Layer 1T' and Td MoTe2
Yeryun Cheon, Soo Yeon Lim, Kangwon Kim +1
We performed polarized Raman spectroscopy on mechanically exfoliated few-layer MoTe2 samples and observed both 1T' and Td phases at room temperature. Few-layer 1T' and Td MoTe2 exh…
Thickness dependence of antiferromagnetic phase transition in Heisenberg-type MnPS3
Soo Yeon Lim, Kangwon Kim, Sungmin Lee +2
The behavior of 2-dimensional (2D) van der Waals (vdW) layered magnetic materials in the 2D limit of the few-layer thickness is an important fundamental issue for the understanding…
Polytypism in Few-Layer Gallium Selenide
Soo Yeon Lim, Jae-Ung Lee, Jung Hwa Kim +6
Gallium selenide (GaSe) is one of layered group-III metal monochalcogenides, which has an indirect bandgap in monolayer and direct bandgap in bulk unlike other conventional transit…
Optical phonons of SnSe(1-x)Sx layered semiconductor alloys
Tharith Sriv, Thi Minh Hai Nguyen, Yangjin Lee +5
The evolution of the optical phonons in layered semiconductor alloys SnSe1-xSx is studied as a function of the composition by using polarized Raman spectroscopy with six different…
Visualizing Orbital Content of Electronic Bands in Anisotropic 2D Semiconducting ReSe
B. K. Choi, S. Ulstrup, S. M. Gunasekera +12
Many properties of layered materials change as they are thinned from their bulk forms down to single layers, with examples including indirect-to-direct band gap transition in 2H se…
Complete determination of crystallographic orientation of ReX2 (X=S, Se) by polarized Raman spectroscopy
Yun Choi, Keunui Kim, Soo Yeon Lim +5
Polarized Raman spectroscopy on few-layer ReS2 and ReSe2 was carried out to determine the crystallographic orientations. Since monolayer ReX2 (X=S or Se) has a distorted trigonal s…
Antiferromagnetic ordering in van der Waals two-dimensional magnetic material MnPS3 probed by Raman spectroscopy
Kangwon Kim, Soo Yeon Lim, Jungcheol Kim +8
Magnetic ordering in the two-dimensional limit has been one of the most important issues in condensed matter physics for the past several decades. The recent discovery of new magne…
Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3
Kangwon Kim, Soo Yeon Lim, Jae-Ung Lee +7
How a certain ground state of complex physical systems emerges, especially in two-dimensional materials, is a fundamental question in condensed-matter physics. A particularly inter…