Yang Gao
ygao87@ustc.edu.cn
Education
2009-2016 Ph.D. in physics, University of Texas at Austin
2005-2009 bachelor’s degree in physics, Peking University
Experience
2021-Present Junior Researcher, Hefei National Laboratory
2022-Present Professor, University of Science and Technology of China
2020-2022 Researcher, University of Science and Technology of China
2016-2020 Postdoctoral research associate, Carnegie Mellon University
Overview of Academic Research
Prof. Gao’s research interest is the nonlinear and nonreciprocal transport and optical phenomena, with special attention on the effect of quantum geometry.
His major achievements include:
* Predict the intrinsic nonlinear Hall effect from quantum metric dipole, provide detailed symmetry analysis, and demonstrate its property in real materials.
* Provide the microscopic theory of nonreciprocal directional dichroism, reveal its geometric origin and its relation to the magnetic quadrupole of Bloch wave packet.
* Re-formulate the anomalous Hall effect as a spin-group symmetry breaking phenomena, and demonstrate its anisotropic feature in the dependence on the orientation of spin order.
Research Directions/Fields:
Various Hall effect and their anisotropy features
Nonlinear and nonreciprocal transport and optical phenomena
Quantum geometry and resulting exotic phenomena of quasi-particles (such as phonons, magnons, and Bogoliubov quasi-particles)
Major Honors and Awards
N.A.
Representative Publications
1. Y. Gao, S. A. Yang, and Q. Niu, Field induced positional shift of Bloch electrons and its dynamical implications. Phys.Rev.Lett. 112, 166601 (2014).
2. Y. Gao, S. A. Yang, and Q. Niu, Geometrical effects in orbital magnetic susceptibility. Phys. Rev. B 91, 214405 (2015).
3. Y. Gao and Q. Niu, Zero-field magnetic response functions in Landau levels. PNAS 114, 7295 (2017).
4. Y. Gao, D. Vanderbilt, and D. Xiao, Microscopic theory of spin toroidization in periodic crystals. Phys. Rev. B 97, 134423 (2018).
5. Y. Gao and D. Xiao, Nonreciprocal directional dichroism induced by the quantum metric dipole. Phys. Rev. Lett. 122, 227402 (2019).
6. Y. Gao, Y. Zhang, and D. Xiao, Tunable layer circular photogalvanic effect in twisted bilayers. Phys. Rev. Lett. 124, 077401 (2020).
7. S.-Y. Xu, et al., Spontaneous gyrotropic electronic order in a transition-metal dichalcogenide. Nature 578, 545 (2020).
8. C. Wang, Y. Gao, and D. Xiao, Intrinsic nonlinear Hall effect in antiferromagnetic tetragonal CuMnAs. Phys. Rev. Lett. 127, 277201 (2021).
9.W. Liang, et al., Berry-curvature engineering for nonreciprocal directional dichroism in two-dimensional antiferromagnets. Phys. Rev. Lett. 131, 256901 (2023).
10. Z. Liu, et al., multipolar anisotropy in anomalous Hall effect from spin-group symmetry breaking. Arxiv: 2408.08810 (2024) (accepted by PRX).