People

Professor Dong-Keun Ki received PhD in experimental condensed matter physics from POSTECH in 2010, he worked as a Senior Research Associate in the University of Geneva, and he has been appointed as an Assistant Professor in The University of Hong Kong (HKU) since 2018. 

Professor Ki’s research interest lies on discovering and understanding new quantum transport phenomena in low-dimensional mesoscopic systems. Materials of interest span widely from 1D nanowire to 3D bulk that include 2D materials, topologically non-trivial materials, and artificially designed heterostructures. During recent years, Prof. Ki’s group is focusing on 2D materials and their van der Waals heterostructures.

1. "Scratching lithography, manipulation, and soldering of 2D materials using microneedle probes", Qing Rao, Guoyun Gao, Xinyu Wang, Hongxia Xue, and Dong-Keun Ki, AIP Adv. 14, 015333 (2024)
2. "Landau-level Spectrum and the Effect of Spin-orbit Coupling in Monolayer Graphene on Transition Metal Dichalcogenides", Qing Rao, Hongxia Xue, and Dong-Keun Ki, Phys. Status Solidi B 2300397 (2024)
3. "Concept for a fractional energy barrier tunneling junction", Yicong Chen, Dong-Keun Ki, Zhibing Li, and Jun Chen, Appl. Phys. Lett. 123, 243503 (2023)
4. "Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe₂", Qing Rao, Wun-Hao Kang, Hongxia Xue, Ziqing Ye, Xuemeng Feng, Kenji Watanabe, Takashi Taniguchi, Ning Wang, Ming-Hau Liu, and Dong-Keun Ki, Nature Commun. 14, 6124 (2023)
5. "Additive Manufacturing of Thermoelectric Microdevices for Four-Dimensional Thermometry", Heekwon Lee, Zhuoran Wang, Qing Rao, Sanghyeon Lee, Xiao Huan, Yu Liu, Jihyuk Yang, Mojun Chen, Dong-Keun Ki, and Jitae Kim, Adv. Mater. 35, 2301704 (2023)
6. "3D Nanoprinting of Perovskites", Mojun Chen, Jihyuk Yang, Zhenyu Wang, Zhaoyi Xu, Heekwon Lee, Hyeonseok Lee, Zhiwen Zhou, Shien-Ping Feng, Sanghyeon Lee, Jaeyeon Pyo, Seung Kwon Seol, Dong-Keun Ki, and Ji Tae Kim, Adv. Mater. 31, 1904073 (2019)
7. "A family of finite-temperature electronic phase transitions in graphene multilayers", Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo, Science 362, 324 (2018)
8. “Electron-hole collision limited transport in charge-neutral bilayer graphene”, Youngwoo Nam, Dong-Keun Ki, David Soler-Delgado, and Alberto F. Morpurgo, , Nat. Phys. 13, 1207 (2017)
9. “Observation of Even Denominator Fractional Quantum Hall Effect in Suspended Bilayer Graphene” Dong-Keun Ki, Vladimir I. Fal'ko, Dmitry A. Abanin, and Alberto F. Morpurgo,  Nano Lett. 14, 2135 (2014)

1. General Research Fund (GRF) 2022/23 (PI): Studying the effect of the moiré superlattice potential from twisted hexagonal boron nitride substrate on atomically thin 2D crystals (HKU Project Code: 17309722)
2. General Research Fund (GRF) 2021 (PI): Probing the low-energy electron dynamics and Fermi surface profile of graphene van der Waals heterostructures by transverse magnetic focusing (HKU Project Code: 17300521)
3. The Ministry of Science and Technology (MoST) (2020YFA0309604) (Co-I): Study on the Transport Characteristics of Two-dimensional Mire Superlattice, Topic 4
4. Collaborative Research Fund (CRF) - Group Research Project 2022/2023 (Co-PI): Many-body paradigm in quantum moiré material research (HKU Project Code: C7037-22G)
5. Areas of Excellence Scheme (Co-PI): 2D materials research: fundamentals towards emerging technologies (HKU Project Code: AoE/P-701/20)