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Welcome to Long Ju's group in the physics department at MIT! Our research focuses on understanding light-matter interactions and electron correlation effects in novel quantum materials. Of particular interest are atomically thin materials and van der Waals hetero-structures of them. These materials host a variety of fascinating electronic and optical properties individually, and they offer exciting opportunities to explore possibilities enabled by controlling the stacking order and electrically tuning the band structure and charge doping. Especially, such materials provide a new platform to design and engineer more exotic quantum phenomena when electron correlations and topology are included. We design problem-driven experiments by combining nano-fabrication, advanced optical spectroscopy and microscopy, and DC transport techniques. See Research for more details and Long's recent Talks.
Welcome to Long Ju's group in the physics department at MIT! Our research focuses on understanding light-matter interactions and electron correlation effects in novel quantum materials. Of particular interest are atomically thin materials and van der Waals hetero-structures of them. These materials host a variety of fascinating electronic and optical properties individually, and they offer exciting opportunities to explore possibilities enabled by controlling the stacking order and electrically tuning the band structure and charge doping. Especially, such materials provide a new platform to design and engineer more exotic quantum phenomena when electron correlations and topology are included. We design problem-driven experiments by combining nano-fabrication, advanced optical spectroscopy and microscopy, and DC transport techniques. See Research for more details and Long's recent Talks.
Lab News:
Lab News:
Feb. 2025: Our paper on Signatures of Chiral Superconductivity in Rhombohedral Graphene has been featured in Journal Club for Condensed Matter Physics. (manuscript, CMP Journal Club)
Feb. 2025: Our paper on Signatures of Chiral Superconductivity in Rhombohedral Graphene has been featured in Journal Club for Condensed Matter Physics. (manuscript, CMP Journal Club)
Jan. 2025: Our paper on Extended quantum anomalous Hall states in graphene/hBN moiré superlattices is published in Nature. (manuscript, MRL News, MIT news)
Jan. 2025: Our paper on Extended quantum anomalous Hall states in graphene/hBN moiré superlattices is published in Nature. (manuscript, MRL News, MIT news)
Nov. 2024: Our paper on On-Chip Terahertz Spectroscopy for Dual-Gated van der Waals Heterostructures at Cryogenic Temperatures, collaborated with Amir Yacoby group at Harvard University, is published in Nano Letters. (manuscript)
Nov. 2024: Our paper on On-Chip Terahertz Spectroscopy for Dual-Gated van der Waals Heterostructures at Cryogenic Temperatures, collaborated with Amir Yacoby group at Harvard University, is published in Nano Letters. (manuscript)
Sep. 2024: Tonghang has been selected for the 2024-2025 Mathworks Science Fellowship! Congratulations!
Sep. 2024: Tonghang has been selected for the 2024-2025 Mathworks Science Fellowship! Congratulations!
Sep. 2024: Welcome our two new undergrads joining our group, Emily Aitken from Northeastern University and Prayoga P Liong from Boston University!
Sep. 2024: Welcome our two new undergrads joining our group, Emily Aitken from Northeastern University and Prayoga P Liong from Boston University!
Sep. 2024: Welcome Shenyong Ye from Peking University, our new graduate student (as well as our previous undergraduate visiting scholar)!
Sep. 2024: Welcome Shenyong Ye from Peking University, our new graduate student (as well as our previous undergraduate visiting scholar)!
Aug. 2024: Welcome Zach Hadjri, our new graduate student from Emory University!
Aug. 2024: Welcome Zach Hadjri, our new graduate student from Emory University!
July. 2024: Welcome our two new undergrad visiting students, Wei Xu from Tsinghua University and Muyang Zhou from University of Science and Techonology of China!
July. 2024: Welcome our two new undergrad visiting students, Wei Xu from Tsinghua University and Muyang Zhou from University of Science and Techonology of China!
Jun. 2024: Our paper on The fractional quantum anomalous Hall effect is published in Nature Reviews Materials. (manuscript)
Jun. 2024: Our paper on The fractional quantum anomalous Hall effect is published in Nature Reviews Materials. (manuscript)
May. 2024: Our paper on Large quantum anomalous Hall effect in spin-orbit proximitized rhombohedral graphene, collaborated with Fan Zhang group at UT Dallas, is published in Science. Congrats to Tonghang, Zhengguang, Yuxuan, Jixiang, and Junseok! (manuscript, MRL News, MIT news)
May. 2024: Our paper on Large quantum anomalous Hall effect in spin-orbit proximitized rhombohedral graphene, collaborated with Fan Zhang group at UT Dallas, is published in Science. Congrats to Tonghang, Zhengguang, Yuxuan, Jixiang, and Junseok! (manuscript, MRL News, MIT news)
Mar. 2024: Welcome Wenhao Zheng, our new postdoc researcher from the Max Planck Institute for Polymer Research!
Mar. 2024: Welcome Wenhao Zheng, our new postdoc researcher from the Max Planck Institute for Polymer Research!
Feb. 2024: Our paper on Fractional quantum anomalous Hall effect in multilayer graphene, collaborated with Liang Fu group at MIT, is published in Nature. Congrats to Zhengguang, Tonghang, Yuxuan, Jixiang and Junseok! (manuscript, Nature News, CMP Journal Club, CMP Journal Club 2, MIT news, Nature research briefing, Quanta Magazine, Nature Reviews Physics)
Feb. 2024: Our paper on Fractional quantum anomalous Hall effect in multilayer graphene, collaborated with Liang Fu group at MIT, is published in Nature. Congrats to Zhengguang, Tonghang, Yuxuan, Jixiang and Junseok! (manuscript, Nature News, CMP Journal Club, CMP Journal Club 2, MIT news, Nature research briefing, Quanta Magazine, Nature Reviews Physics)
Oct. 2023: Our paper on Orbital multiferroicity in pentalayer rhombohedral graphene, collaborated with Hongkun Park group at Harvard, is published in Nature. Congrats to Tonghang, Zhengguang, and Tianyi! (manuscript, MIT news)
Oct. 2023: Our paper on Orbital multiferroicity in pentalayer rhombohedral graphene, collaborated with Hongkun Park group at Harvard, is published in Nature. Congrats to Tonghang, Zhengguang, and Tianyi! (manuscript, MIT news)
Oct. 2023: Our paper on Correlated Insulator and Chern Insulators in Pentalayer Rhombohedral Stacked Graphene, collaborated with Hongkun Park group at Harvard, is published in Nature Nanotechnology. Congrats to Tonghang, Zhengguang, and Tianyi! (manuscript, MIT news, Nature News and Views, cover story)
Oct. 2023: Our paper on Correlated Insulator and Chern Insulators in Pentalayer Rhombohedral Stacked Graphene, collaborated with Hongkun Park group at Harvard, is published in Nature Nanotechnology. Congrats to Tonghang, Zhengguang, and Tianyi! (manuscript, MIT news, Nature News and Views, cover story)
July. 2023: Welcome our two new undergrad visiting students, Shenyong Ye from Peking University and Lihan Shi from University of Science and Techonology of China!
July. 2023: Welcome our two new undergrad visiting students, Shenyong Ye from Peking University and Lihan Shi from University of Science and Techonology of China!
Aug. 2022: Welcome Dasol Kim, our new graduate student from Seoul National University!
Aug. 2022: Welcome Dasol Kim, our new graduate student from Seoul National University!
July. 2022: Jixiang has been selected for the 2022-2023 Mathworks Science Fellowship! Congratulations!
July. 2022: Jixiang has been selected for the 2022-2023 Mathworks Science Fellowship! Congratulations!
July. 2022: Welcome Yuxuan Yao, our new undergrad visiting student from Tsinghua University!
July. 2022: Welcome Yuxuan Yao, our new undergrad visiting student from Tsinghua University!
Apr. 2022: Welcome Varun Kamboj, our new postdoc from University of Cambridge!
Apr. 2022: Welcome Varun Kamboj, our new postdoc from University of Cambridge!
Mar. 2022: Our paper on spectroscopic studies of rhombohedral trilayer graphene / hexagonal boron nitride moiré superlattice (ABC-TLG/hBN), collaborated with Feng Wang group at UC Berkeley, is published in Science. Congrats to Jixiang and Tianyi! (manuscript, MIT news)
Mar. 2022: Our paper on spectroscopic studies of rhombohedral trilayer graphene / hexagonal boron nitride moiré superlattice (ABC-TLG/hBN), collaborated with Feng Wang group at UC Berkeley, is published in Science. Congrats to Jixiang and Tianyi! (manuscript, MIT news)
Feb. 2022: Prof. Long Ju has been awarded the 2022 Sloan Research Fellowship! Congratulations!
Feb. 2022: Prof. Long Ju has been awarded the 2022 Sloan Research Fellowship! Congratulations!
Jan. 2022: Welcome Christopher L Tong, our new undergrad student from MIT!
Jan. 2022: Welcome Christopher L Tong, our new undergrad student from MIT!
Jan. 2022: Our paper, Weyl Fermion magneto-electrodynamics and ultralow field quantum limit in TaAs, collaborated with Brad Ramshaw group at Cornell University, is published in Science Advances. Congrats to Zhengguang! (manuscript)
Jan. 2022: Our paper, Weyl Fermion magneto-electrodynamics and ultralow field quantum limit in TaAs, collaborated with Brad Ramshaw group at Cornell University, is published in Science Advances. Congrats to Zhengguang! (manuscript)
Sep. 2021: Welcome Fangzhou Xia, our new postdoc from MIT!
Sep. 2021: Welcome Fangzhou Xia, our new postdoc from MIT!
Aug. 2021: Welcome Junseok Seo, our new graduate student from Seoul National University!
Aug. 2021: Welcome Junseok Seo, our new graduate student from Seoul National University!
Apr. 2021: Our paper, Accurate measurement of the gap of graphene/hBN moiré superlattice through photocurrent spectroscopy, is published in Physics Review Letters. Congrats to Tianyi and Jixiang! (manuscript)
Apr. 2021: Our paper, Accurate measurement of the gap of graphene/hBN moiré superlattice through photocurrent spectroscopy, is published in Physics Review Letters. Congrats to Tianyi and Jixiang! (manuscript)
Nov. 2020: Welcome Zhengguang Lu, our new postdoc from Florida State University!
Nov. 2020: Welcome Zhengguang Lu, our new postdoc from Florida State University!
Aug. 2020: Welcome Tonghang Han, our new graduate student from Tsinghua University!
Aug. 2020: Welcome Tonghang Han, our new graduate student from Tsinghua University!
Jan. 2020: Welcome Jixiang Yang, our new graduate student from Peking University!
Jan. 2020: Welcome Jixiang Yang, our new graduate student from Peking University!
Mar. 2019: Welcome Tianyi Han, our new postdoc from Hong Kong University of Science and Technology!
Mar. 2019: Welcome Tianyi Han, our new postdoc from Hong Kong University of Science and Technology!
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