Publication : t19/116

Enhancement of Local Pairing Correlations in Periodically Driven Mott Insulators

Peronaci F. ()
Parcollet O. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Schiro M. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:
We investigate a model for a Mott insulator in presence of a time-periodic modulated interaction and a coupling to a thermal reservoir. The combination of drive and dissipation leads to non-equilibrium steady states with a large number of doublon excitations, well above the maximum thermal-equilibrium value. We interpret this effect as an enhancement of local pairing correlations, providing analytical arguments based on an effective Floquet Hamiltonian. Strikingly, this effective Hamiltonian shows a tendency to develop long-range staggered superconducting correlations. This suggests the intriguing possibility of realizing the elusive eta-pairing phase of the repulsive Hubbard model in driven-dissipative Mott Insulators
Année de publication : 2019
Preprint : arXiv:1904.00857
Langue : Anglais

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