Career Profile

A seasoned researcher in the field of computational physics, specializing in the electronic structure calculations of two-dimensional materials. I earned a Ph.D. through extensive research in this area, followed by a postdoctoral fellowship, where I continued to explore advanced materials science. Currently, I am employed at POSCO Holdings, where I engage in research projects utilizing first-principle calculations, molecular dynamics and AI techniques to supports the optimization and analysis of materials manufacturing processes, with a focus on precursor co-precipitation and sintering processes of cathode materials.

Education

Ph.D in Chemistry

Mar. 2012 - Sep. 2018
Pohang University of Science and Technology

I studied electronic structure of two-dimensional solid-state materials using first-principles calculations, especially concerning theoretical design of two-dimensional inorganic materials with enhanced thermoelectric properties by band engineering, and mechanism of spin properties in symmetry broken solid materials (Rashba effect).

B.S. in Physics

Mar. 2007 - Sep. 2011
Pohang University of Science and Technology

Experiences

Senior Researcher

Jan. 2023 - Present
POSCO Holdings, Seoul, South Korea

I engage in research projects utilizing first-principle calculations, molecular dynamics and AI techniques to supports the optimization and analysis of materials manufacturing processes, with a focus on precursor co-precipitation and sintering processes of cathode materials.

Staff Engineer

May. 2021 - Dec. 2022
Samsung Electronics, Hwasung, South Korea

I was involved in the development of 12 nanometer technology devices as a Wafer Level Reliability (WLR) Engineer to detect potential quality issues early and meet customer expectations for intrinsic and extrinsic levels of reliability.

Postdoctoral Researcher

Jan. 2019 - Feb. 2021
Lawrence Berkeley National Laboratory, Berkeley, United States

I conducted theoretical studies on structural/electrical/optical properties of two-dimensional organic-inorganic hybrid perovskites using first-principles calculations.

Postdoctoral Researcher

Sep. 2019 - Dec. 2019
Pohang University of Science and Technology, Pohang, South Korea

I worked on computational research on electronic properties of two-dimensional materials.

Visiting Scholar

Sep. 2016 - Feb. 2017
Lawrence Berkeley National Laboratory, Berkeley, United States

I worked with syncrotron scientists on electronic properties of two-dimensional materials.

Publications

You can find the full list of my publications from Google Scholar.

  • Electronic structures of CO adsorbed Pt-skin surface on Pt–Co and Pt–Ni alloys
  • Jongkeun Jung, Jisook Hong, Donghan Kim, Minsoo Kim, Jihoon Shim, Changyoung Kim
    Current Applied Physics 35, 1 - 6 (2022)
  • Understanding the Role of Electronic Effects in CO on the Pt–Sn Alloy Surface via Band Structure Measurements
  • 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, and Bongjin Simon Mun
    ACS Catalysis 12, 219 - 225 (2021)
  • Observation of Dresselhaus type spin splitting of zinc blende structure semiconductors by circular dichroic photoemission study
  • 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
    Current Applied Physics 30, 96 - 101 (2021)
  • Studying local Berry curvature in 2H-WSe2 by circular dichroism photoemission utilizing crystal mirror plane
  • Soohyun Cho, Jin-Hong Park, Soonsang Huh, Jisook Hong, Wonshik Kyung, Byeong-Gyu Park, J.D. Denlinger, Ji Hoon Shim, Changyoung Kim, Seung Ryong Park
    Scientific Reports 11, 1 - 9 (2021)
  • Layer Edge States Stabilized by Internal Electric Fields in Two-Dimensional Hybrid Perovskites
  • Jisook Hong, David Prendergast, Liang Z. Tan
    Nano Letters 21, 182 - 188 (2020)
  • Phase control and in situ passivation of quasi-2D metal halide perovskites for spectrally stable blue light-emitting diodes
  • Michael Worku, Qingquan He, Liang-jin Xu, Jisook Hong, Ruo Xi Yang, Liang Z. Tan, Biwu Ma
    ACS Applied Materials & Interfaces 12, 45056 - 45063 (2020)
  • Enhancement of Giant Rashba Splitting in BiTeI under Asymmetric Interlayer Interaction
  • Taesu Park, Jisook Hong, Ji Hoon Shim
    Journal of the Physical Society of Japan 89, 044701 (2020)
  • Giant Rashba-Type Spin Splitting in Bi/Ag (111) from Asymmetric Interatomic-Hopping
  • Jisook Hong, Jun-Won Rhim, Inkyung Song, Changyoung Kim, Seung Ryong Park, Ji Hoon Shim
    Journal of the Physical Society of Japan 88, 124705 (2019)
  • Gigantic phonon-scattering cross section to enhance thermoelectric performance in bulk crystals
  • 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
    ACS Nano 13, 8347 - 8355 (2019)
  • Direct visualization of coexisting channels of interaction in CeSb
  • Sooyoung Jang, Robert Kealhofer, Caolan John, Spencer Doyle, Ji-Sook Hong, Ji Hoon Shim, Qimiao Si, Onur Erten, Jonathan D. Denlinger, James G. Analytis
    Science Advances 5, eaat7158 (2019)
  • Experimental Observation of Hidden Berry Curvature in Inversion-Symmetric Bulk 2H-WSe2
  • 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 121, 186401 (2018)
  • Control of valley degeneracy in MoS2 by layer thickness and electric field and its effect on thermoelectric properties
  • Jisook Hong, Changhoon Lee, Jin-Seong Park, Ji Hoon Shim
    Physical Review B 93, 035445 (2016)
  • Magnetic structure of (C5H12N)CuBr3: Origin of the uniform Heisenberg chain behavior and the magnetic anisotropy of the Cu2+ (S= 1/2) ions
  • Changhoon Lee, Jisook Hong, Won-joon Son, Erjun Kan, Ji Hoon Shim, Myung-Hwan Whangbo
    RSC Advances 6, 22722-22727 (2016)
  • Quantitative analysis on electric dipole energy in Rashba band splitting
  • Jisook Hong, Jun-Won Rhim, Changyoung Kim, Seung Ryong Park, Ji Hoon Shim
    Scientific Reports 5, 1 - 9 (2015)
  • Organic–inorganic hybrid perovskites ABI3 (A= CH3NH3, NH2CHNH2; B= Sn, Pb) as potential thermoelectric materials: a density functional evaluation
  • Changhoon Lee, Jisook Hong, Alessandro Stroppa, Myung-Hwan Whangbo, Ji Hoon Shim
    RSC Advances 5, 78701 - 78707 (2015)
  • Density functional theory investigation of the electronic structure and thermoelectric properties of layered MoS2, MoSe2 and their mixed-layer compound
  • Changhoon Lee, Jisook Hong, Wang Ro Lee, Dae Yeon Kim, Ji Hoon Shim
    Journal of Solid State Chemistry 211, 113 - 119 (2014)
  • Analysis of the Difference between the Pyroxenes LiFeSi2O6 and LiFeGe2O6 in Their Spin Order, Spin Orientation, and Ferrotoroidal Order
  • Changhoon Lee, Jinhee Kang, Jisook Hong, Ji Hoon Shim, Myung-Hwan Whangbo
    Chemistry of Materials 26, 1745 - 1750 (2014)