Abstract
We show that periodic driving can enhance electron pairing in strongly-correlated systems. Focusing on the strong-coupling limit of the doped Hubbard model we investigate in-gap, spatially inhomogeneous, on-site modulations and demonstrate that they substantially reduce electronic hopping without suppressing super-exchange interactions and pair hopping. We calculate real-time dynamics for the one-dimensional case, starting from zero and finite temperature initial states, and show that enhanced singlet-pair correlations emerge quickly and robustly in the out-of-equilibrium many-body state. Our results reveal a fundamental pairing mechanism that might underpin optically induced superconductivity in some strongly correlated quantum materials.
Original language | English |
---|---|
Article number | 085104 |
Number of pages | 12 |
Journal | Physical Review B : Condensed Matter and Materials Physics |
Volume | 96 |
Early online date | 1 Aug 2017 |
DOIs | |
Publication status | Published - 15 Aug 2017 |
Keywords
- cond-mat.quant-gas