Andrew Millis
A theory of optically driven metal-insulator transitions is formulated in terms of time evolution of order parameters in a dynamically changing free energy landscape.
Atomic scale calculations at equilibrium and short times are used to define an energy landscape and the initial evolution of order parameters; longer times are accessed in terms of time dependent Ginzburg-Landau theories. The importance of the time dependence of the landscape is highlighted via modeling [1] of experiments on photo induced superconductivity in the LBCO system [2] and the importance of electronic bottlenecks and of electron-lattice effects [3] are explored in the context of a study of ithe dynamics of the photo induced metal transition in Ca2RuO4
[1] Z. Sun and A. J. Millis, Phys. Rev. X 10, 021028 (2020)
[2] K. A. Cremin, J. Zhang, C. C. Homes, G. D. Gu, Z. Sun, M. M. Fogler, A. J. Millis, D. N. Basov, and R. D. Averitt, Proceedings of the National Academy of Sciences 116, 19875 (2019).
[3] A. Georgescu and A. J. Millis, Communications Physics {\bf 5}, 135 (2022)
[4] A. Fnu, A. Singer et. Al, unpublished