Field induced conducting state in Mott insulator
arXiv:2108.12525 · doi:10.1103/PhysRevB.105.054302
Abstract
Electron--electron repulsion, on the one hand, can result in bound pair, which has heavy effective mass. On the other hand, it is also the cause of Mott insulator. We study the effect of a staggered magnetic field on a Hubbard model. We find that a bound pair with large energy bandwidth can be formed under the resonant staggered field, being the half of Hubbard repulsion strength. Accordingly, the system exhibits following dynamical behaviors: (i) When an electric field is applied, fast bound pair Bloch oscillation occurs, while a single electron is frozen. (ii) When a quenching resonant field is applied to an initial antiferromagnetic Mott insulating state, the final state becomes doublon conducting state manifested by the non-zero correlator and large charge fluctuation. Our finding indicates that the cooperation of electron-electron correlation and modulated external field can induce novel quench dynamics.
arXiv comment9 pages, 6 figures
References in corpus (41)
- Many-Body Physics with Ultracold Gases
- Nonequilibrium dynamics of closed interacting quantum systems
- Time-dependence of correlation functions following a quantum quench
- Equilibration, thermalisation, and the emergence of statistical mechanics in closed quantum systems
- The cold atom Hubbard toolbox
- An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc
- Nonequilibrium dynamical mean-field theory and its applications
- Quantum Quench in the Transverse Field Ising Chain
- Repulsively bound atom pairs in an optical lattice
- Environment-independent decoherence rate in classically chaotic systems
- Bloch oscillations and mean-field effects of Bose-Einstein condensates in 1-D optical lattices
- The Luttinger model following a sudden interaction switch-on
- Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
- Exact relaxation in a class of non-equilibrium quantum lattice systems
- Strongly Correlated Quantum Walks in Optical Lattices
- Dephasing and the steady state in quantum many-particle systems
- Optically enhanced coherent transport in YBa2Cu3O6.5 by ultrafast redistribution of interlayer coupling
- Reduced Density Matrix after a Quantum Quench
- Optically induced coherent transport far above Tc in underdoped YBa2Cu3O6+x
- Observation of the Mott Insulator to Superfluid Crossover of a Driven-Dissipative Bose-Hubbard System
- Nonequilibrium quantum dynamics and transport: from integrability to many-body localization
- Transient superconductivity from electronic squeezing of optically pumped phonons
- Analytic results for a quantum quench from free to hard-core one dimensional bosons
- Dynamical Cooper pairing in non-equilibrium electron-phonon systems
- Equilibration of a Tonks-Girardeau gas following a trap release
- Theory of light-enhanced phonon-mediated superconductivity
- Nonequilibrium steady states and transient dynamics of conventional superconductors under phonon driving
- The theory of parametrically amplified electron-phonon superconductivity
- Optically induced superconductivity in striped La2-xBaxCuO4 by polarization-selective excitation in the near infrared
- Bloch-Zener oscillations
- Light-enhanced electron-phonon coupling from nonlinear electron-phonon coupling
- Exact time evolution of space- and time-dependent correlation functions after an interaction quench in the 1D Bose gas
- Pressure tuning of light-induced superconductivity in K3C60
- Damping of Bloch oscillations in the Hubbard model
- Exact dynamics following an interaction quench in a one-dimensional anyonic gas
- Light induced enhancement of superconductivity via melting of competing bond-density wave order in underdoped cuprates
- Light-Enhanced Spin Fluctuations and d-Wave Superconductivity at a Phase Boundary
- -pairing ground states in the non-Hermitian Hubbard model
- Sudden death of particle-pair Bloch oscillation and unidirectional propagation in a one-dimensional driven optical lattice
- Fast transfer and efficient coherent separation of bound cluster in the extended Hubbard model
- Quench field sensitivity of two-particle correlation in a Hubbard model