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Jun Xiao

Jun Xiao

Assistant Professor

Quantum materials, those manifesting quantum properties explicitly, are the primary workhorse in the emerging “second quantum revolution”. Their quantum correlations, entanglement, Berry curvature physics, and non-trivial topology can enable fascinating functional properties such as ultra-low energy consumption, enormous computation power, and ultrahigh sensitivity. Such tremendous progress in condensed matter physics calls for the pathway to translate these quantum notions to technical advantages.

Our group research focuses on structure-property relationships and light-matter interactions in quantum materials for high-performance computing, efficient energy conservation, and high-speed THz optoelectronics. We use ultrafast light pulses and electrically controllable nanodevices to discover, understand, and engineer emerging quantum materials for next-generation information and energy technology. In particular, we will investigate fundamental physics in 2D quantum materials and develop functional devices relying on quantum-mechanical effects including non-equilibrium phase transitions (ferroelectric, magnetic, correlated, and topological), quantum collective excitations, electronic/lattice many-body interactions, and photocarrier dynamics in energy conversion.

Before joining Madison, I worked as a postdoctoral scholar with Prof. Aaron Lindenberg and Prof. Tony Heinz at Stanford University and SLAC National Accelerator Laboratory (2018-2021). I earned my Ph.D. in Applied Science and Technology from UC Berkeley (2018) under Prof. Xiang Zhang’s supervision. I received my bachelor’s degree in Physics from Nanjing University (2012).

Department

Materials Science & Engineering

Contact

729, Engineering Research Building
1500 Engineering Dr
Madison, WI

Featured news

  • PhD 2018, University of California, Berkeley
  • BS 2012, Nanjing University

  • Photo-induced nonequilibrium phenomena, ferroelectric, magnetic, correlated and topological transitions in quantum materials
  • THz optoelectronic materials and devices for 6G communications
  • 2D quantum materials and topological heterostructures for next-generation computing and sensing
  • Ultrafast and nonlinear spectroscopy, THz circuits, Magneto-optics, phase engineering, 2D materials

Affiliated Departments

  • 2023 NSF, NSF CAREER award
  • 2022 APS, APS FECS 2022 Physical Electronics Conference Mini-Grants
  • 2022 University of Wisconsin-Madison, Madison Teaching and Learning Excellence (MTLE) Fellowship
  • 2022 University of Wisconsin-Madison, Madison Teaching and Learning Excellence Fellow
  • 2022 The Gordon and Betty Moore Foundation, The Gordon and Betty Moore Foundation EPiQS Flexible Funding, Finalist (Nominated)
  • 2021 AVS, AVS EMPD Postdoctoral Travel Award
  • 2021 AVS, AVS NSTD Early Career Award, Finalist (Nominated)

  • Liu, Y., Gong, J., Acharya, S., Li, Y., Abrand, A., Fei, F., Rudie, J. M., Zhou, J., Lu, Y., Abbasi, H. N., & others, (2025). Characterization of AlGaAs/GeSn heterojunction band alignment via X-ray photoelectron spectroscopy. Applied Surface Science, 685, 162006.
  • Jiang, H., Xi, T., He, Y., Rhodes, D., Xiao, J., & Wang, Y. (2024). Abnormal nonlinear Hall effect in thin-film Weyl semimetals. Bulletin of the American Physical Society.
  • Subedi, S., Liu, W., Fang, W., Fox, C., Zhai, Z., Fei, F., Ping, Y., Lv, B., & Xiao, J. (2024). Colossal terahertz emission with ultrafast tunability based on van der Waals ferroelectric NbOI $ _2$. arXiv preprint arXiv:2412.08058.
  • Sie, E. J., Othman, M. A., Nyby, C. M., Pemmaraju, D., Garcia, C. A., Wang, Y., Guzelturk, B., Xia, C., Xiao, J., Poletayev, A., & others, (2024). Giant Terahertz Birefringence in an Ultrathin Anisotropic Semimetal. Nano Letters, 24(20), 6031--6037.
  • Lafayette, D., Mao, Y., Duan, W., He, Y., Kohler, D., Rhodes, D., Wright, J., & Xiao, J. (2024). Optical Signatures of Ultrafast Symmetry Switching in Weyl Semimetal TaIrTe 4. Bulletin of the American Physical Society.
  • Mao, Y., Fei, F., Zhang, D., You, H., Jiang, H., Fox, C., He, Y., Rhodes, D., Ma, C., Xiao, J., & others, (2024). Revealing stacking order transition via nanomechanical resonator. npj 2D Materials and Applications, 8(1), 75.
  • Fei, F., Mao, Y., Fang, W., Liu, W., Rollins, J. P., Kondusamy, A. L., Lv, B., Ping, Y., Wang, Y., & Xiao, J. (2024). Spin-mechanical coupling in 2D antiferromagnet CrSBr. Nano Letters, 24(34), 10467--10474.
  • LaDuca, Z., Samanta, T., Jung, T., Xi, T., Genser, K., Xiao, J., Rabe, K., & Kawasaki, J. (2024). Synthesis and Strain Gradient Induced Flexomagnetism in Rippled GdAuGe Heusler Membranes. Bulletin of the American Physical Society.
  • Xi, T., Jiang, H., Gu, Y., Mao, Y., He, Y., Rhodes, D., Van Der Weide, D., Wang, Y., & Xiao, J. (2024). Terahertz sensing based on layered topological semimetal. Bulletin of the American Physical Society.
  • Fox, C., Mao, Y., Zhang, X., Wang, Y., & Xiao, J. (2023). Stacking order engineering of two-dimensional materials and device applications. Chemical Reviews, 124(4), 1862--1898.

  • M S & E 401 - Special Topics in Materials Science and Engineering (Spring 2025)
  • M S & E 790 - Master's Research or Thesis (Spring 2025)
  • M S & E 990 - Research and Thesis (Spring 2025)
  • PHYSICS 990 - Research (Spring 2025)
  • M S & E 456 - Electronic, Optical, and Magnetic Properties of Materials (Fall 2024)
  • M S & E 790 - Master's Research or Thesis (Fall 2024)
  • PHYSICS 990 - Research (Fall 2024)
  • M S & E 790 - Master's Research or Thesis (Summer 2024)
  • PHYSICS 990 - Research (Summer 2024)
  • M S & E 401 - Special Topics in Materials Science and Engineering (Spring 2024)
  • M S & E 790 - Master's Research or Thesis (Spring 2024)
  • PHYSICS 990 - Research (Spring 2024)
  • M S & E 456 - Electronic, Optical, and Magnetic Properties of Materials (Fall 2023)
  • M S & E 790 - Master's Research or Thesis (Fall 2023)
  • PHYSICS 990 - Research (Fall 2023)
  • M S & E 699 - Independent Study (Summer 2023)
  • M S & E 790 - Master's Research or Thesis (Summer 2023)
  • PHYSICS 990 - Research (Summer 2023)