JPS Conf. Proc. 30, 011184 (2020) [6 pages]
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)
Photoinduced η-pairing in One-dimensional Mott Insulators
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1Institut für Physik, Universität Greifswald, D-17489 Greifswald, Germany
2Computational Condensed Matter Physics Laboratory, RIKEN Cluster for Pioneering Research (CPR), Wako, Saitama 351-0198, Japan
3Department of Physics, Columbia University, New York, NY 10027, U.S.A.
4Computational Quantum Matter Research Team, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
5Computational Materials Science Research Team, RIKEN Center for Computational Science (R-CCS), Kobe 650-0047, Japan
Received September 15, 2019
Employing the density-matrix renormalization group technique in the matrix-product-state representation, we investigate the photoexcited superconducting correlations induced by the η-pairing mechanism in the half-filled Hubbard chain. We estimate the characteristic pair correlation function and verify the accuracy of our numerical results by comparison with exact-diagonalization data for small systems. The optimal parameter set of the pump that most enhances the η-pair correlations, is calculated in the strong-coupling regime. For such a pump, we explore the possibility of quasi-long-range order.
©2020 The Author(s)
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