KAIST Directly Visualizes the Hidden Spatial Order of Electrons in a Quantum Material (IMAGE)
Caption
Paper Title: Spatial correlations of charge density wave order across the transition in 2H-NbSe2
Authors: Seokjo Hong, Jaewhan Oh, Jemin Park, Woohyun Cho, Soyoung Lee, Colin Ophus, Yeongkwan Kim, Heejun Yang, SungBin Lee, and Yongsoo Yang
Journal: Physical Review Letters
DOI: https://doi.org/10.1103/776d-dnmf
Date: January 6, 2026
Contact Number: +82-42-350-7303
e-mail: yongsoo.yang@kaist.ac.kr
Lab: Multi-Dimensional Atomic Imaging Laboratory (MDAIL) at KAIST ( https://mdail.kaist.ac.kr/ )
Keywords:
Charge density wave
NbSe2
4D-STEM
Spatial correlation
CDW-strain anticorrelation
Acknowledgements:
The authors thank E.-G. Moon for helpful discussions. This research was mainly supported by the National Research Foundation of Korea (NRF) Grants (RS-2023-00208179 and RS-2025-02243032) funded by the Korean Government (MSIT). Y.Y. also acknowledges the support from the KAIST singularity professor program. S.B.L. was supported by NRF Grant (2021R1A2C109306013) and Nano Material Technology Development Program through the NRF funded by MSIT (RS-2023-00281839). Y.K. was financially supported by NRF Grant (No. RS-2022-00143178 and No. RS-2024-00345856) and Korea Research Institute of Standards and Science (KRISS) (Grant No. KRISS-GP2025-0015). H. Y. was supported by an NRF Grant No. RS-2024-00340377 funded by MSIT. The 4D-STEM, ADF-STEM and EELS experiments were conducted using a double Cs corrected Titan cubed G2 60-300 (FEI) and Spectra Ultra (ThermoFisher) equipment at KAIST Analysis Center for Research Advancement (KARA). Excellent support by Hyung Bin Bae, Jin-Seok Choi and the staff of KARA is gratefully acknowledged. We declare that the authors utilized the ChatGPT (https://chat.openai.com/chat) for language editing purpose only, and the original manuscript texts were all written by human authors, not by artificial intelligence.
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