Barry Bradlyn

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• View my full Publication list on arXiv

Biography

Professor Bradlyn received his bachelor's degree in Physics from the Massachusetts Institute of Technology in 2009. He went on to receive his Ph.D. from Yale University in 2015, under the supervision of Nicholas Read. His thesis research focused on linear response and Berry phases in the fractional quantum Hall effect. His primary contributions was the development of a formalism for computing the viscoelastic and thermal response functions for two dimensional Topological phases.

From 2015 to 2018, Professor Bradlyn held a postdoctoral research position at the Princeton Center for Theoretical Science, where he studied the role of crystal symmetries in topological insulators and semimetals. He predicted the existence of topologically charged, multiply degenerate fermions in weakly interacting crystals with no known analogue in high energy physics. Additionally, he developed a real-space formulation of topological band theory, allowing for the prediction of many new topological insulators and semimetals.

Professor Bradlyn joined the physics department at the University of Illinois in 2018.

Research Interests

• symmetry protected topological semimetals
• geometric response in condensed matter
• Quantum Hall effect
• topological insulators

Selected Articles in Journals

• C. Devescovi, A. Morales-Pérez, Y. Hwang, M. García-Díez, I. Robredo, J. L. Mañes, B. Bradlyn, A. García-Etxarri, M. G. Vergniory, "Axion Topology in Photonic Crystal Domain Walls," Nature Communications 15, 6814 (2024).
• R. C. McKay, F. Mahmood, B. Bradlyn, "Spatially Inhomogeneous Linear and Nonlinear Electromagnetic Response in Periodic Solids: A General Approach," Phys. Rev. X 14, 011058 (2024).
• K.-S. Lin, G. Palumbo, Y. Hwang, Z. Guo, J. Blackburn, D. P. Shoemaker, F. Mahmood, Z. Wang, G. A. Fiete, B. J. Wieder, and B. Bradlyn, "Spin-Resolved Topology and Partial Axion Angles in Three-Dimensional Insulators," Nat. Commun. 15, 550 (2024).
• D. Manning-Coe, B. Bradlyn, "Ground state stability, symmetry, and degeneracy in Mott insulators with long range interactions," Phys. Rev. B 108, 165136 (2023).
• L. Elcoro, B. J. Wieder, Z. Song, Y. Xu, B. Bradlyn, B. A. Bernevig, "Magnetic Topological Quantum Chemistry," Nat. Commun. 12, 5965 (2021).
• N. B.M. Schroeter, S. Stolz, K. Manna, F. de Juan, M. G. Vergniory, J. A. Krieger, D. Pei, P. Dudin, T. K. Kim, C. Cacho, B. Bradlyn, H. Borrmann, M. Schmidt, R. Widmer, V. Strokov, C. Felser, "Observation and manipulation of maximal Chern numbers in the chiral topological semimetal PdGa," Science 369, 179-183 (2020).
• P. Rao and Barry Bradlyn, "Hall viscosity in quantum systems with discrete symmetry: point group and lattice anisotropy," Phys. Rev. X 10, 021005 (2020).
• B. J. Wieder, Z. Wang, J. Cano, X. Dai, L. M. Schoop, B. Bradlyn, B. .Bernevig, "Strong and Fragile Topological Dirac Semimetals with Higher-Order Fermi Arcs," Nat. Commun. 11, 627 (2020).
• J. Gooth, B. Bradlyn, S. Honnali, C. Schindler, N. Kumar, J. Noky, Y. Qi, C. Shekhar, Y. Sun, Z. Wang, B. A. Bernevig, and C. Felser, "Axionic charge density wave in the Weyl semimetal (TaSe₄)₂I," Nature 575, 315-319 (2019).
• B. Offertaler and B. Bradlyn, "Viscoelastic response of quantum Hall fluids in a tilted field," Phys. Rev. B 99, 035427 (2019).
• B. J. Wieder, B. Bradlyn, Z. Wang, J. Cano, Y. Kim, H.-S. D. Kim, A. M. Rappe, C. L. Kane, and B. A. Bernevig, "Wallpaper fermions and the nonsymmorphic Dirac insulator," Science 361, 246--251 (2018).
• L. Elcoro, B. Bradlyn, Z. Wang, M. G. Vergniory, J. Cano, C. Felser, B. A. Bernevig, D. Orobengoa, G. de la Flor, and M. I. Aroyo, "Double crystallographic groups and their representations on the Bilbao Crystallographic Server," J. Appl. Cryst. 50, 1457-1477 (2017).
• B. Bradlyn, L. Elcoro, J. Cano, M. G. Vergniory, Z. Wang, C. Felser, M. I. Aroyo, and B. A. Bernevig, "Topological quantum chemistry," Nature 547, 298-305 (2017).
• A. Gromov, S. D. Geraedts, and B. Bradlyn, "Investigating anisotropic quantum Hall states with bi-metric geometry," Phys. Rev. Lett. 119, 146602 (2017).
• B. Bradlyn, J. Cano, Z. Wang, M. G. Vergniory, C. Felser, R. J. Cava, and B. A. Bernevig, "Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals," Science 353, aaf5037 (2016).

Research Honors

• Presidential Early Career Award for Scientists and Engineers (PECASE) (January 2025)
• Air Force Young Investigator Award (November 2020)
• NSF CAREER Award (June 2020)
• Alfred P. Sloan Foundation Research Fellow (February 2020)
• McMillan Award (August 2019)
• Facebook Content Policy Research on Social Media Platforms Research Award (May 2019)

Recent Courses Taught

• PHYS 213 - Univ Physics: Thermal Physics
• PHYS 214 - Univ Physics: Quantum Physics
• PHYS 487 - Quantum Physics II
• PHYS 567 - Geom Topol Mod Elec Struct The
• PHYS 598 GTC - Geometry and topology in CMP
• PHYS 598 GTC - Special Topics in Physics