Article
Materials Science, Multidisciplinary
Chiara Bigi, Federico Mazzola, Jun Fujii, Ivana Vobornik, Giancarlo Panaccione, Giorgio Rossi
Summary: By investigating the spin properties of 2H-NbSe2 using photoemission spectroscopy, the study compared the data obtained from CD-ARPES and SARPES experiments. It was found that CD-ARPES cannot be used to infer intrinsic spin properties in 2H-NbSe2, while SARPES data provide reliable direct information on the spin properties of the electron states.
Article
Chemistry, Multidisciplinary
Michael Uzhansky, Subhrajit Mukherjee, Gautham Vijayan, Elad Koren
Summary: The p-n junction is essential for modern electronic circuitry, and 2D based heterostructures, such as WSe2 and alpha-In2Se3, offer superior electrostatic tunability and reconfigurability. This study utilizes the intercoupled 2D ferroelectricity of alpha-In2Se3 to introduce non-volatile electrostatic doping in WSe2, enabling reconfigurable p-n junction. The fabricated device exhibits stable switching, high rectification ratio, and low leakage current, making it a promising candidate for advanced optoelectronic and memory applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Kyoung-Whan Kim, Hogyun Jeong, Jeongwoo Kim, Hosub Jin
Summary: Research on modifying the definition of Berry curvature to explain vertical Hall effects and in-plane transport phenomena has important implications for quantum transport on two-dimensional platforms.
Article
Materials Science, Multidisciplinary
Kwang-Hyon Kim, Ju-Ryong Kim
Summary: This study introduces chiral quasi-BIC by simultaneously breaking the in-plane inversion and mirror symmetries in dielectric metasurfaces, resulting in strong chirality and near-unity circular dichroism. Compared with previous results, this in-plane structural perturbation makes it more feasible for practical fabrication.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Physics, Multidisciplinary
Soohyun Cho, Jin-Hong Park, Jisook Hong, Jongkeun Jung, Beom Seo Kim, Garam Han, Wonshik Kyung, Yeongkwan Kim, S. -K. Mo, J. D. Denlinger, Ji Hoon Shim, Jung Hoon Han, Changyoung Kim, Seung Ryong Park
PHYSICAL REVIEW LETTERS
(2018)
Article
Multidisciplinary Sciences
Sooyoung Jang, Robert Kealhofer, Caolan John, Spencer Doyle, Ji-Sook Hong, Ji Hoon Shim, Q. Si, O. Erten, Jonathan D. Denlinger, James G. Analytis
Article
Chemistry, Multidisciplinary
Junphil Hwang, Hoon Kim, Mi-Kyung Han, Jisook Hong, Ji-Hoon Shim, Jang-Yeul Tak, Young Soo Lim, Yingshi Jin, Jiyong Kim, Hwanjoo Park, Dong-Keon Lee, Je-Hyeong Bahk, Sung-Jin Kim, Woochul Kim
Article
Physics, Multidisciplinary
Jisook Hong, Jun-Won Rhim, Inkyung Song, Changyoung Kim, Seung Ryong Park, Ji Hoon Shim
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2019)
Article
Physics, Multidisciplinary
Taesu Park, Jisook Hong, Ji Hoon Shim
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2020)
Article
Nanoscience & Nanotechnology
Michael Worku, Qingquan He, Liang-jin Xu, Jisook Hong, Ruo Xi Yang, Liang Z. Tan, Biwu Ma
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Jongkeun Jung, Jisook Hong, Donghan Kim, Minsoo Kim, Jihoon Shim, Changyoung Kim
Summary: By utilizing angle resolved photoemission spectroscopy, this study investigates the electronic structures of CO molecules on the surface of Pt-Co and Pt-Ni alloys, and finds a reduction in the chemical bonding strength. These results reveal the significant role of electronic structure in determining the chemical properties of bimetallic alloys.
CURRENT APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Soohyun Cho, Wonsig Jung, Jisook Hong, Beomyoung Kim, Garam Han, M. Leandersson, T. Balasubramanian, Masashi Arita, Kenya Shimada, Ji Hoon Shim, Changyoung Kim, Seung Ryong Park
Summary: The study revealed the impact of the Dresselhaus field on spin-splitting in ZBSS crystals due to the lack of inversion symmetry. It also demonstrated the usefulness of CD-ARPES in revealing the spin-splitting structure in momentum space. Additionally, combining CD-ARPES with a hard x-ray incident beam shows promise for investigating spin-splitting structures in ZBSS heterostructures.
CURRENT APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Jongkeun Jung, Sungwoo Kang, Laurent Nicolai, Jisook Hong, Jan Minar, Inkyung Song, Wonshik Kyung, Soohyun Cho, Beomseo Kim, Jonathan D. Denlinger, Francisco Jose Cadete Santos Aires, Eric Ehret, Philip Ross, Jihoon Shim, Slavomir Nemsak, Doyoung Noh, Seungwu Han, Changyoung Kim, Bongjin Simon Mun
Summary: This study provides direct evidence for charge transfer between adsorbed CO molecules and metal substrates, with a unique signature of chemisorption process revealed in the observed band structures. Differences in the degree of charge transfer between Pt and Pt-Sn surfaces upon CO adsorption were observed, attributed to the effect of Pt-Sn intermetallic bonding on the interaction of CO with the surface.
Article
Chemistry, Multidisciplinary
Jisook Hong, David Prendergast, Liang Z. Tan
Summary: Two-dimensional organic-inorganic hybrid perovskites have been intensively explored due to their tunable band gaps, exciton binding energies, and increased stability. Experimental observations suggest localized edge states in 2D hybrid perovskites, with multiple proposed origins. First-principles calculations show that layer edge states are stabilized by internal electric fields in 2D hybrid perovskites, facilitating their design for optoelectronic applications.
Article
Materials Science, Multidisciplinary
Jintae Kim, Rajarshi Pal, Jin-Hong Park, Jung Hoon Han
Article
Materials Science, Multidisciplinary
Jung Hoon Han, Jin-Hong Park, Patrick A. Lee
Article
Materials Science, Multidisciplinary
Jin-Hong Park, Seung Hun Lee, Choong H. Kim, Hosub Jin, Bohm-Jung Yang