Talk given by Prof. Tatyana Baturina University of Regensburg Germany Abstract: The Mott insulator and Mott transition are an exemplary manifestation of quantum many-body physics of strongly correlated systems. While the thermodynamic Mott transition is studied in great detail, the dynamic transition remains largely unexplored. The experimental challenge is that the dynamic Mott transition in electron systems is disguised by effects of disorder.  Vortex system enables to bypass this problem offering a tunable experimental playground for studying pure Mott physics.   I will discuss our results on a square array of nano-patterned superconducting islands where we find the first experimental evidence for the dynamic Mott transitions of different universality classes corresponding to different commensurate fillings [1]. Our findings offer a comprehensive description of dynamic critical behavior and establish a deep connection between equilibrium and nonequilibrium phase transitions. [1] Nicola Poccia, Tatyana I. Baturina, Francesco Coneri, Cor G. Molenaar, X. Renshaw Wang, Ginestra Bianconi, Alexander Brinkman, Hans Hilgenkamp, Alexander A. Golubov, Valerii M. Vinokur, Critical behavior at a dynamic vortex insulator-to-metal transition, Science 349, 1202 (2015).

This event is part of the eventgroup INT Talks

Homepage
https://www.int.kit.edu/events.php

Speaker
Prof. Tatyana Baturina

University of Regensburg, Germany
http://www.physik.uni-regensburg.de/aktuell/2014/baturina.phtml

Organizer
Dr. Igor Gornyi
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Mail: igor gornyi ∂does-not-exist.kit edu

Targetgroup
Interested / Everyone