Dresden 2017 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 62: Correlated Electrons: Nonequilibrium Quantum Many-Body Systems 1
TT 62.7: Invited Talk
Thursday, March 23, 2017, 11:15–11:45, HSZ 304
Optical Control of Complex Quantum Materials — •Stefan Kaiser — Max Planck Institut für Festkörperforschung und 4. Physikalisches Institut, Universität Stuttgart, Germany
Advanced ultrafast nonlinear optical methods open new ways of controlling complex solid-state materials on unprecedented timescales. In quantum materials, finding new ways of manipulating the complex interplay of electronic phases or effectively tuning electronic interactions opens new avenues in controlling physical properties and designing new functionalities. I will show how we investigate different scenarios like the balancing between competing phases triggered by ultrashort light pulses or possibilities of dynamical stabilization of new states of matter in periodically driven light fields. A remarkable effect are possibilities to induce superconductivity in high temperature cuprate superconductors at temperatures far above Tc [1-3]. Tuning local interactions [4,5] and possible light-induced superconductivity in the doped fullerides K3C60 [6] will serve as important example that inducing such intriguing effects is a more general effect and not restricted to the rather specialized class of cuprate systems.
[1] D. Fausti et al. Science 331, 189 (2011)
[2] S. Kaiser et al. Phys. Rev. B 89, 184515 (2014)
[3] W. Hu et al. Nature Materials 13, 705 (2014)
[4] R. Singla et al. Phys. Rev Lett. 115, 187401 (2015)
[5] S. Kaiser et al. Sci. Rep. 4, 3823 (2014)
[6] M. Mitrano et al. Nature 530, 461 (2016)