Abstract
We report possible light-induced superconductivity in the organic molecular solid K3C60, a superconductor at equilibrium below Tc=20 K. In our experiment we excited this alkali-doped fulleride with strong femtosecond pulses, tuned to be resonant with local molecular vibrational modes. By means of THz time-domain spectroscopy, we detected the pump-induced changes in the conductivity spectrum as a function of pump-probe time delay. Strikingly, at temperatures up to 100 K, we measured a light-induced response with the same optical properties of the equilibrium superconductor. An interpretation in terms of non-linear coupling between different vibrational modes may give hints to explain this emergent physics away of equilibrium.
Original language | English |
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Title of host publication | 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 |
Publisher | IEEE Computer Society |
Volume | 2016-November |
ISBN (Electronic) | 9781467384858 |
DOIs | |
Publication status | Published - 28 Nov 2016 |
Event | 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark Duration: 25 Sep 2016 → 30 Sep 2016 |
Conference
Conference | 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 |
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Country/Territory | Denmark |
City | Copenhagen |
Period | 25/09/16 → 30/09/16 |