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Phase Diagram for Light-Induced Superconductivity in κ−(ET)2−X

MPS-Authors
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Buzzi,  M.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Nicoletti,  D.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Fava,  S.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons224134

Jotzu,  G.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons133811

Cavalleri,  A.
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Department of Physics, Clarendon Laboratory, University of Oxford;

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PhysRevLett.127.197002.pdf
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Citation

Buzzi, M., Nicoletti, D., Fava, S., Jotzu, G., Miyagawa, K., Kanoda, K., et al. (2021). Phase Diagram for Light-Induced Superconductivity in κ−(ET)2−X. Physical Review Letters, 127(19): 197002. doi:10.1103/PhysRevLett.127.197002.


Cite as: http://hdl.handle.net/21.11116/0000-0008-C76A-1
Abstract
Resonant optical excitation of certain molecular vibrations in κ−(BEDT−TTF)2Cu[N(CN)2]Br has been shown to induce transient superconductinglike optical properties at temperatures far above equilibrium Tc. Here, we report experiments across the bandwidth-tuned phase diagram of this class of materials, and study the Mott insulator κ−(BEDT−TTF)2Cu[N(CN)2]Cl and the metallic compound κ−(BEDT−TTF)2Cu(NCS)2. We find nonequilibrium photoinduced superconductivity only in κ−(BEDT−TTF)2Cu[N(CN)2]Br, indicating that the proximity to the Mott insulating phase and possibly the presence of preexisting superconducting fluctuations are prerequisites for this effect.