Please refer to the PI’s google scholar page for our latest research publications.

Complete List:

  1. C. Wang, X.-W. Zhang, X. Liu, X. Xu, Y. Ran, T. Cao, and D. Xiao, “Fractional Chern Insulator in Twisted Bilayer MoTe2,” Phys. Rev. Lett. 132, 03650 (2024).
  2. K. Xie, X.-W. Zhang, D. Xiao, and T. Cao, “Engineering Magnetic Phases of Layered Antiferromagnets by Interfacial Charge Transfer,” ACS Nano 17, 22684–22690 (2023).
  3. E. J. Telford, D. G. Chica, M. E. Ziebel, K. Xie, N. S. Manganaro, C.‐Y. Huang, J. Cox, A. H. Dismukes, X. Zhu, J. P. S. Walsh, T. Cao, C. R. Dean, and X. Roy, “Designing magnetic properties in CrSBr through hydrostatic pressure and ligand substitution,” Adv. Phys. Res. 2, 2300036 (2023).
  4. H. Park, J. Cai, E. Anderson, Y. Zhang, J. Zhu, X. Liu, C. Wang, W. Holtzmann, C. Hu, Z. Liu, T. Taniguchi, K. Watanabe, J.-H. Chu, T. Cao, L. Fu, W. Yao, C.-Z. Chang, D. Cobden, D. Xiao, and X. Xu, “Observation of Fractionally Quantized Anomalous Hall Effect,” Nature 622, 74–79 (2023).
  5. S. Regmi, A. P. Sakhya, T. Fernando, Y. Zhao, D. Jeff, M. Sprague, F. Gonzalez, I. B. Elius, M. I. Mondal, N. Valadez, D. Jarrett, A. Agosto, J. Yang, J.-H. Chu, S. I. Khondaker, X. Xu, T. Cao, and M. Neupane, “Observation of Flat and Weakly Dispersing Bands in the Van Der Waals Semiconductor Nb3Br8 with Breathing Kagome Lattice,” Phys. Rev. B 108, L121404 (2023).
  6. D. A Jeff, F. Gonzalez, K. Harrison, Y. Zhao, T. Fernando, S. Regmi, Z. Liu, H. R. Gutierrez, M. Neupane, J. Yang, J.-H. Chu, X. Xu, T. Cao, and S. I. Khondaker, “Raman study of layered breathing kagome lattice semiconductor Nb3Cl8,” 2D Materials 10, 045030 (2023).
  7. D. Waters, E. Thompson, E. Arreguin-Martinez, M. Fujimoto, Y. Ren, T. Taniguchi, K. Watanabe, T. Cao, D. Xiao, and M. Yankowitz, “Mixed-Dimensional Moiré Systems of Twisted Graphitic Thin Films,” Nature 620, 750–755 (2023).
  8. T. Fernando and T. Cao, “Quantized Interband Topological Index in Two-Dimensional Systems,” Phys. Rev. B 108, L081111 (2023).
  9. Y. Ye, J. Qian, X.-W. Zhang, C. Wang, D. Xiao, and T. Cao, “Kekul\’e Moir\’e Superlattices,” Nano Lett. 23, 6536–6543 (2023).
  10. J. Cai, E. Anderson, C. Wang, X. Zhang, X. Liu, W. Holtzmann, Y. Zhang, F. Fan, T. Taniguchi, K. Watanabe, Y. Ran, T. Cao, L. Fu, D. Xiao, W. Yao, and X. Xu, “Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2,” Nature 622, 63–68 (2023).
  11. H. Park, J. Zhu, X. Wang, Y. Wang, W. Holtzmann, T. Taniguchi, K. Watanabe, J. Yan, L. Fu, T. Cao, D. Xiao, D. R. Gamelin, H. Yu, W. Yao, and X. Xu, “Dipole Ladders with Large Hubbard Interaction in a Moiré Exciton Lattice,” Nature Phys. 19, 1286–1292 (2023).
  12. X.-W. Zhang, Y. Ren, C. Wang, T. Cao, and D. Xiao, “Gate-Tunable Phonon Magnetic Moment in Bilayer Graphene,” Phys. Rev. Lett. 130, 226302 (2023).
  13. A. Ripin, R. Peng, X.-W. Zhang, S. Chakravarthi, M. He, X. Xu, K.-M. Fu, T. Cao, and M. Li, “Tunable Phononic Coupling in Excitonic Quantum Emitters,” Nature Nanotech. 18, 1020–1026 (2023).
  14. X. Wang, X.-W. Zhang, J. Zhu, H. Park, Y. Wang, C. Wang, W. G. Holtzmann, T. Taniguchi, K. Watanabe, J. Yan, D. R. Gamelin, W. Yao, D. Xiao, T. Cao, and X. Xu, “Intercell Moiré Exciton Complexes in Electron Lattices,” Nature Mater. 22, 599–604 (2023).
  15. S. Regmi, T. W. Fernando, Y. Zhao, A. P. Sakhya, G. Dhakal, I. B. Elius, H. Vazquez, J. Denlinger, J. Yang, J.-H. Chu, X. Xu, T. Cao, and M. Neupane, “Spectroscopic Evidence of Flat Bands in Breathing Kagome Semiconductor Nb3I8,” Communications Materials 3, 100 (2022).
  16. G. M. Diederich, J. Cenker, Y. Ren, J. Fonseca, D. G. Chica, Y. J. Bae, X. Zhu, X. Roy, T. Cao, D. Xiao, and X. Xu, “Tunable Interaction between Excitons and Hybridized Magnons in a Layered Semiconductor,” Nature Nanotech. 18, 23–28 (2023)
  17. R. A. Beck, S. Sun, X. Xu, D. R. Gamelin, T. Cao, and X. Li, “Understanding External Pressure Effects and Interlayer Orbital Exchange Pathways in the Two-Dimensional Magnet─Chromium Triiodide,” J. Phys. Chem. C 126, 19327–19335 (2022).
  18. Z. Sun, Y. Zhang, J. Qian, R. Qiao, X. Li, Z. Wang, C. Zheng, K. Liu, T. Cao, W.‐T. Liu, and S. Wu, “Compelling Evidence for the ε‐Phase InSe Crystal by Oblique Incident Second Harmonic Generation,” Adv. Optical Mater. 10, 2201183 (2022).
  19. X.-W. Zhang, T. Cao, “Ab Initio Calculations of Spin-Nonconserving Exciton-Phonon Scattering in Monolayer Transition Metal Dichalcogenides,” J. Phys.: Condens. Matter 34, 264002 (2022).
  20. R. Peng, A. Ripin, Y. Ye, J. Zhu, C. Wu, S. Lee, H. Li, T. Taniguchi, K. Watanabe, T. Cao, X. Xu, and M. Li, “Long-Range Transport of 2D Excitons with Acoustic Waves,” Nature Commun. 13, 1334 (2022).
  21. J. Cenker, S. Sivakumar, K. Xie, A. Miller, P. Thijssen, Z. Liu, A. Dismukes, J. Fonseca, E. Anderson, X.-Y. Zhu, X. Roy, D. Xiao, J.-H. Chu, T. Cao, and X. Xu, “Reversible Strain-Induced Magnetic Phase Transition in a Van der Waals Magnet,” Nature Nano. 17, 256–261 (2022).
  22. X.-W. Zhang, K. Xie, E.-G. Wang, T. Cao, and X.-Z. Li, “Phonon-Mediated Exciton Relaxation in Two-Dimensional Semiconductors,” arXiv:2110.08873 (2021).
  23. T. Song, Q.-C. Sun, E. Anderson, C. Wang, J. Qian, T. Taniguchi, K. Watanabe, M. A. McGuire, R. Stöhr, D. Xiao, T. Cao, J. Wrachtrup, and X. Xu, “Direct Visualization of Magnetic Domains and Moiré Magnetism in Twisted 2D Magnets,” Science 374, 1140–1144 (2021).
  24. D. J. Rizzo, J. Jiang, D. Joshi, G. Veber, C. Bronner, R. A. Durr, P. H. Jacobse, T. Cao, A. Kalayjian, H. Rodriguez, P. Butler, T. Chen, S. G. Louie, F. R. Fischer, and M. F. Crommie, “Rationally Designed Topological Quantum Dots in Bottom-Up Graphene Nanoribbons,” ACS Nano 15, 20633–20642 (2021).
  25. N. Wilson, K. Lee, J. Cenker, K. Xie, A. Dismukes, E. Telford, J. Fonseca, S. Sivakumar, C. Dean, T. Cao, X. Roy, X. Xu, and X.-Y. Zhu, “Interlayer Electronic Coupling on Demand in a 2D Magnetic Semiconductor,” Nature Mater. 20, 1657–1662 (2021).
  26. T. Song, E. Anderson, M. Tu, K. Seyler, T. Taniguchi, K. Watanabe, M. A. McGuire, X. Li, T. Cao, D. Xiao, W. Yao, and X. Xu, “Spin Photovoltaic Effect in Magnetic Van der Waals Heterostructures,” Science Advances 36, abg8094 (2021).
  27. J. Yu, R. Giridharagopal, Y. Li, K. Xie, J. Li, T. Cao, X. Xu, and D. S. Ginger, “Imaging Graphene Moiré Superlattices via Scanning Kelvin Probe Microscopy,” Nano Lett. 7, 3280–3286 (2021).
  28. F. Zhao, T. Cao, and S. G. Louie, “Topological Phases in Graphene Nanoribbons Tuned by Electric Fields,” Phys. Rev. Lett. 127, 166401 (2021).
  29. D. Luo, J. Tang, X. Shen, F. Ji, J. Yang, S. Weathersby, M. E. Kozina, Z. Chen, J. Xiao, Y. Ye, T. Cao, G. Zhang, X. Wang, A. M Lindenberg “Twist-Angle-Dependent Ultrafast Charge Transfer in MoS2-Graphene van der Waals Heterostructures,” Nano Lett. 21, 8051-8057 (2021).
  30. M. K. L. Man, J. Madéo, C. Sahoo, K. Xie, M. Campbell, V. Pareek, A. Karmakar, E. L. Wong, A. Al Mahboob, N. S. Chan, D. R. Bacon, X. Zhu, M. Abdelrasoul, X. Li, T. F. Heinz, F. H. da Jornada, T. Cao, and K. M. Dani, “Experimental Measurement of the Intrinsic Excitonic Wavefunction,” Science Advances 7, eabg0192 (2021).
  31. Y. Guo, Y. Lin, K. Xie, B. Yuan, J. Zhu, P.-C. Shen, A.-Y. Lu, C. Su, E. Shi, K. Zhang, Z. Cai, J. Park, Q. Ji, J. Wang, X. Dai, X. Tian, S. Huang, L. Dou, J. Li, Y. Yu, J.-C. Idrobo, T. Cao, T. Palacios, and J. Kong, “Designing Artificial Two-Dimensional Landscapes via Room-Temperature Atomic-Layer Substitution,” PNAS 118, e2106124118 (2021).
  32. J. Madéo, M. K. L. Man, C. Sahoo, M. Campbell, V. Pareek, E. L. Wong, A. Al Mahboob, N. S. Chan, A. Karmakar, B. M. K. Mariserla, X. Li, T. F. Heinz, T. Cao, and K. M. Dani, “Directly Visualizing the Momentum-Forbidden Dark Excitons and Their Dynamics in Atomically Thin Semiconductors,” Science 370, 1199-1204 (2020).
  33. D. J. Rizzo, G. Veber, J. Jiang, R. McCurdy, T. Cao, C. Bronner, T. Chen, S. G. Louie, F. R. Fischer, and M. F. Crommie, “Inducing Metallicity in Graphene Nanoribbons via Zero-Mode Superlattices,” Science 369, 1597-1603 (2020).
  34. S. Zhao, G. B. Barin, T. Cao, J. Overbeck, R. Darawish, T. Lyu, S. Drapcho, S. Wang, T. Dumslaff, A. Narita, M. Calame, K. Müllen, S. G. Louie, P. Ruffieux, R. Fasel, and F. Wang, “Optical Imaging and Spectroscopy of Atomically Precise Armchair Graphene Nanoribbons,” Nano Lett. 20, 1124-1130 (2020).
  35. K. Xie, X. Li, and T. Cao, “Theory and Ab Initio Calculation of Optically Excited States — Recent Advances in Two-Dimensional Materials,” Adv. Mater. 1904306 (2019).
  36. Z. Li, T. Wang, C. Jin, Z. Lu, Z. Lian, Y. Meng, M. Blei, M. Gao, T. Taniguchi, K. Watanabe, T. Ren, T. Cao, S. Tongay, D. Smirnov, L. Zhang, and S.-F. Shi, “Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon,” ACS Nano 13, 14107-14113 (2019).
  37. T. Song, Z. Fei, M. Yankowitz, Z. Lin, Q. Jiang, K. Hwangbo, Q. Zhang, B. Sun, T. Taniguchi, K. Watanabe, M. A. McGuire, D. Graf, T. Cao, J.-H. Chu, D. H. Cobden, C. R. Dean, D. Xiao, and Xiaodong Xu, ” Switching 2D Magnetic States via Pressure Tuning of Layer Stacking,” Nature Mater. 18, 1298–1302 (2019)
  38. Z. Sun, Y. Yi, T. Song, G. Clark, B. Huang, Y. Shan, S. Wu, D. Huang, C. Gao, Z. Chen, M. McGuire, T. Cao, D. Xiao, W.-T. Liu, W. Yao, X. Xu, and S. Wu, “Giant nonreciprocal second-harmonic generation from antiferromagnetic bilayer CrI3,” Nature 572, 497–501 (2019).
  39. Z. Li, T. Wang, C. Jin, Z. Lu, Z. Lian, Y. Meng, M. Blei, S. Gao, T. Taniguchi, K. Watanabe, T. Ren, S. Tongay, L. Yang, D. Smirnov, T. Cao, and S.-F. Shi, “Emerging Photoluminescence from the Dark-Exciton Phonon Replica in Monolayer WSe2,” Nature Commun. 10, 2469 (2019).
  40. C.-K. Yong, M. I. B. Utama, C. S. Ong, T. Cao, E. C. Regan, J. Horng, Y. Shen, H. Cai, K. Watanabe, T. Taniguchi, S. Tongay, H. Deng, A. Zettl, S. G. Louie, and F. Wang “Valley-Dependent Exciton Fine Structure and Autler–Townes Doublets from Berry Phases in Monolayer MoSe2,” Nature Mater. 18, 1065–1070 (2019)
  41. M. Wu, Z. Li, T. Cao, and S. G. Louie, “Physical Origin of Giant Excitonic and Magneto-Optical Responses in Two-Dimensional Ferromagnetic Insulators,” Nature Commun. 10, 2371 (2019).
  42. L. Guo, M. Wu, T. Cao, D. M. Monahan, Y.-H. Lee, S. G. Louie, and G. R. Fleming, “Exchange-Driven Intravalley Mixing of Excitons in Monolayer Transition Metal Dichalcogenides,” Nature Phys. 15, 228–232 (2019).
  43. Z. Li, T. Cao, and S. G. Louie, “Two-Dimensional Ferromagnetism in Few-Layer Van der Waals Crystals: Renormalized Spin-Wave Theory and Calculations,” J. of Mag. and Mag. Mat. 463, 28-35 (2018).
  44. D. J. Rizzo, G. Veber, T. Cao, C. Bronner, T. Chen, F. Zhao, H. Rodriguez, S. G. Louie, M. F. Crommie, and F. R. Fischer, “Topological Band Engineering of Graphene Nanoribbons,” Nature 560, 204–208 (2018).
  45. Y.-L. Lee, F. Zhao, T. Cao, J. Ihm, and S. G. Louie, “Topological Phases in Cove-Edged and Chevron Graphene Nanoribbons: Geometric Structures, Z2 Invariants, and Junction States,” Nano Lett. 18, 7247-7253 (2018).
  46. Z. Pedramrazi, C. Chen, F. Zhao, T. Cao, G. D. Nguyen, A. A. Omrani, H.-Z. Tsai, R. R. Cloke, T. Marangoni, D. J. Rizzo, T. Joshi, C. Bronner, W.-W. Choi, F. R. Fischer, S. G. Louie, and M. F. Crommie, “Concentration Dependence of Dopant Electronic Structure in Bottom-up Graphene Nanoribbons,” Nano Lett. 18, 3550-3556 (2018).
  47. T. Cao, M. Wu, and S. G. Louie, “Unifying Optical Selection Rules for Excitons in Two Dimensions: Band Topology and Winding Numbers,” Phys. Rev. Lett. 120, 087402 (2018).
  48. Y. Li, T. Wang, M. Wu, T. Cao, Y. Chen, R. Sankar, R. K. Ulaganathan, F. Chou, C. Wetzel, C.-Y. Xu, S. G. Louie, and S. Shi, “Ultrasensitive Tunability of the Direct Bandgap of Two-dimensional InSe Flakes via Strain Engineering.” 2D Mater. 5, 021002 (2018).
  49. X. Xu, C. Liu, Z. Sun, T. Cao, Z. Zhang, E. Wang, Z. Liu, K. Liu, “Interfacial Engineering of Graphene Bandgap,” Chem. Soc. Rev. 47, 3059-3099 (2018).
  50. L. Ju, L. Wang, T. Cao, T. Taniguchi, K. Watanabe, S. G. Louie, F. Rana, J. Park, J. Hone, F. Wang, and P. L. McEuen, “Tunable Excitons in Bilayer Graphene,” Science 358, 907-910 (2017).
  51. Z. Ji, H. Hong, J. Zhang, Q. Zhang, W. Huang, T. Cao, R. Qiao, C. Liu, J. Liang, C. Jin, L. Jiao, K. Shi, S. Meng, K. Liu, “Robust Stacking-Independent Ultrafast Charge Transfer in MoS2/WS2 Bilayers”, ACS Nano, 11, 12020–12026 (2017).
  52. T. Cao, F. Zhao, and S. G. Louie, “Topological Phases in Graphene Nanoribbons: Junction States, Spin Centers, and Quantum Spin Chains,” Phys. Rev. Lett. 119, 076401 (2017).
  53. X.-X. Zhang, T. Cao, Z. Lu, Y.-C. Lin, F. Zhang, Y. Wang, Z. Li, J. C. Hone, J. A. Robinson, D. Smirnov, S. G. Louie, and T. F. Heinz, “Magnetic Brightening and Control of Dark Excitons in Monolayer WSe2,” Nature Nanotech. 12, 883–888 (2017).
  54. C. Gong, L. Li, Z. Li, H. Ji, A. Stern, Y. Xia, T. Cao, W. Bao, C. Wang, Y. Wang, Z. Q. Qiu, R. J. Cava, S. G. Louie, J. Xia, and X. Zhang, “Discovery of Intrinsic Ferromagnetism in Two-Dimensional Van der Waals Crystals,” Nature 546, 265–269 (2017).
  55. Z. Li, T. Cao, M. Wu, and S. G. Louie, “Generation of Anisotropic Massless Dirac Fermions and Asymmetric Klein Tunneling in Few-Layer Black Phosphorus Superlattices,” Nano Lett. 17, 2280–2286 (2017).
  56. H. Hong, C. Liu, T. Cao, C. Jin, S. Wang, F. Wang, and K. Liu, “Interfacial Engineering of Van der Waals Coupled 2D Layered Materials,” Adv. Mater. Interfaces 4, 1601054 (2017).
  57. T. Cao, Z. Li, D. Y. Qiu, and S. G. Louie, “Gate Switchable Transport and Optical Anisotropy in 90° Twisted Bilayer Black Phosphorus,” Nano Lett. 16, 5542-5546 (2016).
  58. G. D. Nguyen, F. M. Tom, T. Cao, Z. Pedramrazi, C. Chen, D. J. Rizzo, T. Joshi, C. Bronner, Y. C. Chen, M. Favaro, S. G. Louie, F. R. Fischer, and M. F. Crommie, “Bottom-up Synthesis of N=13 Sulfer-Doped Graphene Nanoribbons,” J. Phys. Chem. C 120, 2684-2687 (2016).
  59. D. Y. Qiu, T. Cao, and S. G. Louie, “Nonanalyticity, Valley Quantum Phases, and Lightlike Exciton Dispersion in Monolayer Transition Metal Dichalcogenides: Theory and First-Principles Calculations,” Phys. Rev. Lett. 115, 176801 (2015).
  60. R. R. Cloke, T. Marangoni, G. D. Nguyen, T. Joshi, D. J. Rizzo, C. Bronner, T. Cao, S. G. Louie, M. F. Crommie, and F. R. Fischer, “Site-Specific Substitutional Boron Doping of Semiconducting Armchair Graphene Nanoribbons,” J. Amer. Chem. Soc. 137, 8872-8875 (2015).
  61. X. Zhou, J. Cheng, Y. Zhou, T. Cao, H. Hong, Z. Liao, S. Wu, H. Peng, K. Liu, and D. Yu. “Strong Second-harmonic Generation in Atomic Layered GaSe.” J. Amer. Chem. Soc. 137, 7994-7997 (2015).
  62. T. Cao, Z. Li, and S. G. Louie, “Tunable Magnetism and Half-Metailicity in Hole-Doped Monolayer GaSe,” Phys. Rev. Lett. 114, 236602 (2015).
  63. Y.-C. Chen, T. Cao, C. Chen, Z. Pedramrazi, D. Haberer, D. G. de Oteyza, F. R. Fischer, S. G. Louie and M. F. Crommie, “Molecular Bandgap Engineering of Bottom-up Synthesized Graphene Nanoribbon Heterojunctions,” Nature Nanotech. 10, 156-160 (2015).
  64. L. Zhang, K. Liu, A. B. Wong, J. Kim, X. Hong, C. Liu, T. Cao, S. G. Louie, F. Wang, and P. Yang, “Three-dimensional Spirals of Atomic Layered MoS2,” Nano Lett. 14, 6418-6423 (2014).
  65. Z. Ye, T. Cao, K. O’Brien, H. Y. Zhu, X. B. Yin, Y. Wang, S. G. Louie, and X. Zhang, “Probing Excitonic Dark States in Single-layer Tungsten Disulphide,” Nature 513, 214-218 (2014).
  66. K. Liu, L. Zhang, T. Cao, C. H. Jin, D. Y. Qiu, Q. Zhou, A. Zettl, P. D. Yang, S. G. Louie, and F. Wang, “Evolution of Interlayer Coupling in Twisted MoS2 Bilayers,” Nature Commun. 5, 4966 (2014).
  67. X. Li, T. Cao, Q. Niu, J. Shi, and J. Feng, “Coupling the Valley Degree of Freedom to Antiferromagnetic Order,” Proc. Natl. Acad. Sci. U.S.A. 110, 3738-3742 (2013).
  68. T. Cao, G. Wang, W. Han, H. Ye, C. Zhu, J. Shi, Q. Niu, P. Tan, E. Wang, B. Liu, and J. Feng, “Valley-selective Circular Dichroism of Monolayer Molybdenum Disulphide”, Nature Commun. 3, 887 (2012).
  69. T. Cao, J. Feng, and E. G. Wang, “Adsorption of Hydrogen on the Interface of a Graphene/Boron nitride Hybrid Atomic Membrane”, Phys. Rev. B 84, 205447 (2011).