Work

Steering spin fluctuations in lattice systems via two-tone Floquet engineering

Year: 2024

Type: article

Abstract: We report on the control of spin pair fluctuations using two-tone Floquet engineering. We consider a one-dimensional spin-1/2 lattice with periodically modulated spin exchanges using parametric resonances. The stroboscopic dynamics generated from distributed spin exchange modulations lead to spin pair fluctuations reaching quasi-maximally correlated states and a subharmonic response in local observables, breaking the discrete-time translational symmetry. We present a protocol to control the interacting many-body dynamics, producing spatial and temporal localization of correlated spin pairs via dynamically breaking correlated spin pairs from the edges towards the center of the lattice. Our result reveals how spin fluctuations distribute in a heterogeneous lattice depending on parametric resonances. This may open new routes for exploring distinct nonequilibrium states of matter and the conduction of quasiparticles in quantum materials.

Source: Physica Scripta

DOI: 10.1088/1402-4896/ad9d85

Authors: Ruben Peña, Felipe Torres, Guillermo Romero

Institutions: Universidad de Santiago de Chile, Basque Center for Applied Mathematics, Center for the Development of Nanoscience and Nanotechnology, University of Chile

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Universidad de Santiago de Chile, Fondo Nacional de Desarrollo Científico y Tecnológico

Award: G3423469676