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SONG Xueyang 宋雪洋
Assistant Professor
Tel 2358 7490
Fax 2358 1652
Email songxy
Office Room 4439
Xueyang Song grew up in north China and attended the Asian Physics Olympiad at high school. She got her Bachelor of Science from Peking University, and PhD in physics from Harvard University, under the supervision of Ashvin Vishwanath. Before joining HKUST, she was a Moore postdoctoral fellow at Massachusetts Institute of Technology. 
Research Areas
She is interested in theoretical condensed matter physics, in particular strongly correlated systems. Quantum phenomena like fractionalization and gauge structures can emerge in condensed matter systems, such as frustrated quantum magnets, fractional quantum Hall states and high-temperature superconductors. She focuses on effective low-energy descriptions of the correlated phases, phase transitions and general constraints on entangled phases of matter, from the perspective of symmetry, anomaly and topology. Her research makes extensive use of effective field theory, as well as lattice models, through a combination of analytical and numerical methods. She recently investigated the possible exotic phases realized on 2D tunable platforms such as Moire systems by stacking and twisting thin films.
Representative Publications
  1. Phase transitions out of quantum Hall states in moiré TMD bilayers” by X-Y Song, Y-H Zhang and T Senthil (Phys. Rev. B 109, 085143 (2024))
  2. Doping a moiré Mott Insulator: A t-J model study of twisted cuprates” by Xue-Yang Song, Ya-Hui Zhang and Ashvin Vishwanath (Phys. Rev. B 105, L201102(2022), Featured in condensed matter journal club by Leonid Glazman DOI: 10.36471/JCCM_July_2022_02 )
  3. “Electric polarization as a nonquantized topological response and boundary Luttinger theorem” by Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath and Chong Wang (PHYSICAL REVIEW RESEARCH 3, 023011 (2021))
  4. Unifying Description of Competing Orders in Two Dimensional Quantum Magnets”, by Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath and Chong Wang (Nat Commun 10, 4254 (2019), featured in “Quantum electrodynamics in a piece of rock”. Nat Rev Phys 1, 583–584 (2019), by McGreevy, J.)
  5. From spinon band topology to the symmetry quantum numbers of monopoles in Dirac spin liquids”, by Xue-Yang Song, Chong Wang, Ashvin Vishwanath and Yin-Chen He, (Physical Review X 10, 011033 (2020))
  6. Strongly Correlated Metal built from Sachdev-Ye-Kitaev model”, by Xue-Yang Song, Chao-Ming Jian and Leon Balents (Phys. Rev. Lett. 119, 216601 (2017))
  7. Low-energy spin dynamics of the honeycomb spin liquid beyond the Kitaev limit”, by Xue-Yang Song, Yi-Zhuang You, and Leon Balents (Phys. Rev. Lett. 117.037209(2016))