​​​​​​​​​

• Y. Ho, M. Chen, C. Wong, M. Grzeszczyk, A. Budniak, J. Viana-Gomes, X. Li, M. Koperski, G. Eda, “Imaging Néel vector in few-layer CrPS4 with second-harmonic generation,”

      Nano Letters 25, 5624 (2025).

​

• D. Kim, S. Dasgupta, X. Ma, J. Park, H. Wei, L. Luo, J. Doumani, X. Li, H. Everitt, S. Kimura, H. Nojiri, J. Wang, S. Cao, M. Bamba, K. Hazzard, J. Kono, “Observation of the magnonic Dicke superradiant phase transition,”

      Science Advances 11, eadt1691 (2025).

​

• W. Wong, F. Chen, X. Wang, X. Li, X. Zou, J. Hanna, A. Grimsdale, “Formation of 1D ‘perovskitoid’ (API)2Pb3Br10 instead of layered <110> oriented 2D-perovskite (API)PbBr4 under different dissolution temperatures,”

      Inorganic Chemistry 64, 2574 (2025).

​

• O. Mehio, Y. Han, X. Li, H. Ning, Z. Porter, S. Wilson, D. Hsieh, “Observation of excitons bound by antiferromagnetic correlations,”

      Physical Review Research 7, 013114 (2025).

​

• X. Li, I. Esin, Y. Han, Y. Liu, H. Zhao, H. Ning, C. Barrett, J. Shan, K. Seyler, G. Cao, G. Refael, D. Hsieh, “Time-hidden magnetic order in a multi-orbital Mott insulator,”

      Nature Physics 21, 451 (2025).

​

• N. Peraca*, X. Li*, J. Moya*, K. Hayashida*, X. Ma, K. Neubauer, D. Padilla, C. Huang, P. Dai, A. Nevidomskyy, H. Pu, E. Morosan, S. Cao, M. Bamba, J. Kono, “Quantum simulation of an extended Dicke model with a magnetic solid,”

      Communications Materials 5, 42 (2024).

​

• U. Kar, E. Lu, A. Singh, P.V. Reddy, Y. Han, X. Li, C. Cheng, S. Yang, C. Lin, I. Cheng, C. Hsu, D. Hsieh, W. Lee, G. Guo, W. Lee, “Nonlinear and nonreciprocal transport effects in untwinned thin films of ferromagnetic Weyl metal SrRuO3,”

      Physical Review X 14, 011022 (2024).

​

• T. Lin, R. Xu, X. Chen, Y. Guan, M. Yao, J. Zhang, X. Li, H. Zhu, “Sub-wavelength, phase-sensitive microscopy of third-order nonlinearity in terahertz frequencies,”

      ACS Photonics 11, 33 (2023).

​

• H. Ning*, O. Mehio*, X. Li*, M. Buchhold, M. Driesse, H. Zhao, G. Cao, D. Hsieh, “A coherent phonon-induced hidden quadrupolar ordered state in Ca2RuO4,”

      Nature Communications 14, 8258 (2023).

​

• O. Mehio*, X. Li*, H. Ning*, Z. Lenarcic, Y. Han, M. Buchhold, Z. Porter, N. Laurita, S. Wilson, D. Hsieh, “A Hubbard exciton fluid in a photo-doped antiferromagnetic Mott insulator,”

      Nature Physics 19, 1876 (2023).

​

• X. Li, J. Kono, Q. Si, S. Paschen, "Is the optical conductivity of heavy fermion strange metals Planckian?"

      Frontiers in Electronic Materials 2, 934691 (2023).

​

• X. Li, D. Kim, Y. Liu, J. Kono, “Terahertz spin dynamics in rare-earth orthoferrites,”

      Photonics Insights 1, R05 (2022). (invited review article, on the cover)

​

• H. Ning*, O. Mehio*, C. Lian*, X. Li, E. Zoghlin, P. Zhou, B. Cheng, S. D. Wilson, B. M. Wong, D. Hsieh, “Light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability,”

      ​ Physical Review B 106, 205118 (2022).

​

• C. Li, X. Li, T. Deshpande, X. Li, N. Nair, J. Analytis, D. Silevitch, T. Rosenbaum, D. Hsieh, “High pressure control of optical nonlinearity in the polar Weyl semimetal TaAs,”

       Physical Review B 106, 014101 (2022).

​

• X. Li*, H. Ning*, O. Mehio*, H. Zhao, M. Lee, K. Kim, F. Nakamura, Y. Maeno, G. Cao, D. Hsieh, “Keldysh space control of charge dynamics in a strongly driven Mott insulator,”

​       Physical Review Letters 128, 187402 (2022).

​

• Y. Tang, J. Fan, X. Li, J. Ma, M. Qi, C. Yu, W. Gao, “Physics-informed recurrent neural network for time dynamics in optical resonances,”

       Nature Computational Science 2, 169-178 (2022).

​

• M. Bamba, X. Li, N. Peraca, J. Kono, “Magnonic superradiant phase transition,”

       Communications Physics 5, 3 (2022).

​

• W. Gao, D. Adinehloo, X. Li, A. Mojibpour, Y. Yomogida, A. Hirano, T. Tanaka, H. Kataura, M. Zheng, V. Perebeinos, J. Kono, “Band structure dependent electronic localization in macroscopic films of single-chirality single-wall carbon nanotubes,”

      Carbon 183, 774-779 (2021).

​​

• T. Makihara, K. Hayashida, G. Noe, X. Li, N. Peraca, X. Ma, Z. Jin, W. Ren, G. Ma, I. Katayama, J. Takeda, H. Nojiri, D. Turchinovich, S. Cao, M. Bamba, J. Kono, “Ultrastrong magnon-magnon coupling dominated by antiresonant interactions,”

​       Nature Communications 12, 3115 (2021).

 

• X. Li*, K. Yoshioka*, Q. Zhang, N. Marquez, F. Katsutani, W. Gao, G. Noe, J. Watson, M. Manfra, I. Katayama, J. Takeda, J. Kono, “Observation of photoinduced terahertz gain in GaAs quantum wells: Evidence for radiative two-exciton-to-biexciton scattering,”

​       Physical Review Letters 125, 167401 (2020).

​

• L. Prochaska*, X. Li*, D. MacFarland*, A. Andrews, M. Bonta, E. Bianco, S. Yazdi, W. Schrenk, H. Detz, A. Limbeck, Q. Si, E. Ringe, G. Strasser, J. Kono, S. Paschen, “Singular charge fluctuations at a magnetic quantum critical poin,"

       Science 367, 285 (2020).

​

• X. Li*, K. Yoshioka*, M. Xie*, G. Noe, W. Lee, N. Marquez, W. Gao, T. Hagiwara, H. Orjan, L. Nien, T. Nagao, M. Kitajima, H. Nojiri, C. Shih, A. MacDonald, I. Katayama, J. Takeda, G. Fiete, J. Kono, “Terahertz Faraday and Kerr rotation spectroscopy of Bi1-xSbx films in high magnetic fields up to 30 Tesla,”

       Physical Review B 100, 115145 (2019).

 

• W. Gao, C. Doiron, X. Li, J. Kono, G. Naik, “Macroscopically aligned carbon nanotubes as a refractory platform for hyperbolic thermal emitters,”

      ​ ACS Photonics 6, 1602 (2019).

 

• F. Katsutani, W. Gao, X. Li, Y. Ichinose, Y. Yomogida, K. Yanagi, J. Kono, “Direct observation of cross-polarized excitons in aligned single-chirality single-wall carbon nanotubes,”

​       Physical Review B 99, 035426 (2019).

​

• X. Li, M. Bamba, N. Yuan, Q. Zhang, Y. Zhao, M. Xiang, K. Xu, Z. Jin, W. Ren, G. Ma, S. Cao, D. Turchinovich, J. Kono, “Observation of Dicke cooperativity in magnetic interactions,”

       Science 361, 794 (2018).

 

• X. Li, M. Bamba, Q. Zhang, S. Fallahi, G. Gardener, W. Gao, M. Lou, K. Yoshioka, M. Manfra, J. Kono, “Vacuum Bloch-Siegert shift in Landau polaritons with ultrahigh cooperativity,”

      Nature Photonics 12, 324 (2018).

 

• W. Gao, X. Li, M. Bamba, J. Kono, “Continuous transition between weak and ultrastrong coupling through exceptional points in carbon nanotube microcavity exciton-polaritons,”

      Nature Photonics 12, 362 (2018).

 

• C. Sui, Y. Yang, R. Headrick, Z. Pan, J. Wu, J. Zhang, S. Jia, X. Li, W. Gao, O. Dewey, C. Wang, X. He, J. Kono, M. Pasquali, J. Lou, “Directional sensing based on flexible aligned carbon nanotube film nanocomposites,”

      Nanoscale 10, 14938 (2018).

 

• X. Wang, W. Gao, X. Li, Q. Zhang, S. Nanot, E. Haroz, J. Kono, W. Rice, “Magneto-transport in type- enriched single-wall carbon nanotube networks,”

      Physical Review Materials 2, 116001 (2018).

 

• K. Kashiwagi, L. Xie, X. Li, T. Kageyama, M. Miura, H. Miyashita, J. Kono, S. Lee, “Flexible and stackable terahertz metamaterials via silver-nanoparticle inkjet printing,”

      AIP Advances 8, 045104 (2018).

 

• C. Wang, X. Li, Y. Huang, W. Xu, R. Zhou, R. Wang, L. Xie, Y. Ying, “Metallic mesh device-based terahertz parallel-plate resonators: characteristics and applications,”

      Optics Express 26, 24992 (2018).

​

• L. Du, X. Li, W. Lou, G. Sullivan, K. Chang, J. Kono, R. Du, “Evidence for a topological excitonic insulator in InAs/GaSb bilayers,”

      Nature Communications 8, 1971 (2017).

​

• Q. Zhang, M. Lou, X. Li, J. Reno, W. Pan, J. Watson, M. Manfra, J. Kono, “Collective non-perturbative coupling of 2D electrons with high-quality-factor terahertz cavity photons,”

      Nature Physics 12, 1005 (2016).

​

• X. Li, C. Fan, J. Huang, “Magnetocontrollable high-pass behavior of waveguides with magneto- rheological fluids,”

​      The European Physical Journal Applied Physics 63, 21001 (2013).