Kai Chang Lab

Low-Dimensional Quantum Materials - BAQIS

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Dr. Su Kong Chong
(张树康)

Associate Research Scientist

E-mail: sukongc-at-baqis-dot-ac-dot-cn

Experiences

I earned my B.Sc. and M.Sc. degrees from the University of Malaya in 2009 and 2012, respectively. After a brief teaching role at the Universiti Tunku Abdul Rahman, I pursued my Ph.D. at the University of Utah, under the supervision of Prof. Vikram V. Deshpande, graduating in 2020. From 2020 to 2022, I worked as a postdoctoral scholar at the University of California, Los Angeles, in the research group led by Prof. Kang L. Wang. In 2023, I joined the Beijing Academy of Quantum Information Sciences as an Assistant Research Scientist and was promoted to Associate Research Scientist in 2025.

Research Interests

My research focuses on quantum transport in advanced electronic devices based on topological materials, which can be tuned both electrically and mechanically. My research interests center on topological materials, extending to their associated quantum effects, magnetic properties, and correlated phases, which have potential applications in future computing.

Publication

#Corresponding author, *Co-first author

  1. L. Tai*, H. He*, S. K. Chong*, H. Zhang, H. Huang, G. Qiu, Y. Ren, Y. Li, H.-Y. Yang, T.-H. Yang, X. Dong, B. Dai, T. Qu, Q. Shu, Q. Pan, P. Zhang, F. Xue, J. Li, A. V. Davydov, K. L. Wang#, “Giant Hall Switching by Surface-State-Mediated Spin-Orbit Torque in a Hard Ferromagnetic Topological Insulator”, Adv. Mater. 36, 2406772 (2024).
  2. S. K. Chong#, L. Chao, Y. Cheng, S. H. Lee, Z. Mao, A. H. MacDonald & K. L. Wang#, “Exchange-Driven Chern States in High Mobility Intrinsic Magnetic Topological Insulators”, Phys. Rev. Lett. 132, 146601 (2024). Selected as Cover Article
  3. S. K. Chong*#, Y. Cheng*, H. Man, S. H. Lee, B. Dai, M. Tanabe, T.-H. Yang, Z. Mao, K. Moler & K. L. Wang#, “Intrinsic Exchange Biased Anomalous Hall Effect in an Uncompensated Antiferromagnet MnBi2Te4”, Nat. Commun. 15, 2881 (2024).
  4. S. K. Chong*#, L. Chao*, S. H. Lee, J. Jarosynski, Z. Mao, A. H. MacDonald & K. L. Wang#, “Anomalous Landau Quantization in Intrinsic Magnetic Topological Insulators”, Nat. Commun. 14, 4805 (2023).
  5. S. K. Chong*#, P. Zhang*, J. Li*, Y. Zhou, J. Wang, H. Zhang, C. Eckberg, P. Deng, L. Tai, A. V. Davydov, J. Xia, R. Wu & K. L. Wang#, “Electrical Manipulation of Topological Phases in Quantum Anomalous Hall Insulator”, Adv. Mater. 35, 2207622 (2023).
  6. S. K. Chong#, L. Liu, F. Liu, T. D. Sparks & V. V. Deshpande#, “Emergent Helical Edge States in a Hybridized Three-Dimensional Topological Insulator”, Nat. Commun. 13, 6386 (2022).
  7. S. K. Chong & V. V. Deshpande#, “van der Waals Heterostructures based on Three-Dimensional Topological Insulators”, Curr. Opin. Solid State Mater. Sci. 25, 100939 (2021). Invited Review Article
  8. S. K. Chong, R. Tsuchikawa, J. Harmer, T. D. Sparks & V. V. Deshpande#, “Landau Levels of Topologically-Protected Surface States Probed by Dual-Gated Quantum Capacitance”, ACS Nano 14, 1158 (2020).
  9. S. K. Chong, K. B. Han, T. D. Sparks & V. V. Deshpande#, “Tunable Coupling between Surface States of a Three-Dimensional Topological Insulator in the Quantum Hall Regime”, Phys. Rev. Lett. 123, 036804 (2019). Media coverage: MRS Bulletin Dec 16, 2019 “Thinness of 3D topological insulators detrimental to their metallic surfaces”, University of Utah media release “Limitation exposed in promising quantum computing material”
  10. S. K. Chong, K. B. Han, A. Nagaoka, R. Tsuchikawa, R. Liu, H. Liu, Z. V. Vardeny, D. A. Pesin, C. Lee, T. D. Sparks & V. V. Deshpande#, “Topological Insulator-Based van der Waals Heterostructures for Effective Control of Massless and Massive Dirac Fermions”, Nano Lett. 18, 8047 (2018).
  11. K. B. Han*, S. K. Chong*, A. O. Oliynyk, A. Nagaoka, S. Petryk, M. Scarpulla, V. V. Deshpande & T. D. Sparks#, “Enhancement in Surface Mobility and Quantum Transport of Bi2-xSbxTe3-ySey Topological Insulator by Controlling the Crystal Growth Conditions”, Sci. Rep. 8, 17290 (2018).

Funding

  1. PI: “Strain Effect on Magnetic Topological Insulator-based Heterostructures towards Controllable Topological Phase Transition”, National Natural Science Foundation of China, 01/2025-12/2026.
  2. PI: “Magnetoelectrical Coupling in Magnetic Topological Insulators Created by Strain Engineering”, Beijing Natural Science Foundation, 10/2023-09/2024.
  3. Co-PI: “Spatially Resolved Characterization and in situ Tuning of the Local Electronic States in Topological Quantum Computing Devices”, Innovation Program for Quantum Science and Technology, 04/2024-03/2029.

Awards

  1. Science Fund Program for Young Scholars of the National Natural Science Foundation of China (Overseas), 2024
  2. Beijing Foreign Talent Funding Program of the Beijing Overseas Talents Center, 2024
  3. University of Utah Swigart Graduate Scholarship, 2019
  4. University of Malaya fellowship scheme, 2009

Academic Part-time Position

  1. Editor: Review editor of Frontiers in Physics
  2. Reviewer for Nature Physics, Science Advances, Nano Letters, Applied Physics Letters, Scientific Reports, Journal of Physical Chemistry C, Nanotechnology, ACS Applied Nano Materials, Microporous and Mesoporous Materials, Journal of Alloys & Compounds.

Opening positions

Postdoc and PhD positions are available for highly motivated candidates. Application documents should be sent to sukongc@baqis.ac.cn

     Address: Building #3, West Area, No.10 Xi-bei-wang East Road, Haidian District, Beijing 100193, P.R. CHINA.