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SUMMARY:Moving in a dynamically changing free energy landscape: strain\, h
 eterostructure and optical control of the correlation-driven metal-insulat
 or transition - Prof. Andrew Millis\, Columbia University\; co-Director\, 
 Center for Computational Quantum Physics\, The Flatiron Institute
DTSTART:20231101T111500Z
DTEND:20231101T123000Z
UID:TALK207670@talks.cam.ac.uk
CONTACT:Malte Grosche
DESCRIPTION:A theory [1] of energy landscape in the space of electronic an
 d lattice degrees of freedom is formulated for  “Mott” metal-insulator
  materials is formulated and argued to resolve the long-standing question 
 of the relative importance of electronic and lattice contributions in the 
 Mott metal insulator transition. Moving beyond equilibrium\,  the theory i
 s used to understand the physics of optically driven metal-insulator trans
 itions. Atomic scale calculations at equilibrium and short times are used 
 to define an energy landscape and the initial evolution of order parameter
 s\;  longer times are accessed in terms of time dependent Ginzburg-Landau 
 theories. The importance of the  time dependence of the landscape is highl
 ighted via modeling of experiments on photo induced superconductivity in t
 he LBCO system [2\,3] and the importance of electronic bottlenecks and of 
 electron-lattice effects [4] are explored in the context of a study of  it
 he dynamics of the photo induced metal transition in Ca2RuO4\n\n[1] A. Geo
 rgescu and A. J. Millis\, Communications Physics 5\,  135 (2022) \n\n[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 Nation
 al Academy of Sciences 116\, 19875 (2019).\n\n[3] Z. Sun and A. J. Millis\
 , Phys. Rev. X 10\, 021028 (2020)\n\n[4] A. Verma\, D. Golez\,…A. J. Mil
 lis and  A. Singer arXiv:2304:02149
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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