Time Crystals from single-molecule magnet arrays

• URL: http://arxiv.org/abs/2409.10816v1
• Date: Tue, 17 Sep 2024 01:21:14 GMT
• Title: Time Crystals from single-molecule magnet arrays
• Authors: Subhajit Sarkar, Yonatan Dubi,
• Abstract summary: Time crystals are a unique non-equilibrium quantum phenomenon with promising applications in current quantum technologies. Here we theoretically predict discrete time-crystals in a periodically driven molecular magnet array. Surprisingly, we find that the time-crystal response frequency correlates with the energy levels of the individual magnets.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Time crystals, a unique non-equilibrium quantum phenomenon with promising applications in current quantum technologies, mark a significant advance in quantum mechanics. Although traditionally studied in atom-cavity and optical lattice systems, pursuing alternative nanoscale platforms for time crystals is crucial. Here we theoretically predict discrete time-crystals in a periodically driven molecular magnet array, modeled by a spin-S Heisenberg Hamiltonian with significant quadratic anisotropy, taken with realistic and experimentally relevant physical parameters. Surprisingly, we find that the time-crystal response frequency correlates with the energy levels of the individual magnets and is essentially independent of the exchange coupling. The latter is unexpectedly manifested through a pulse-like oscillation in the magnetization envelope, signaling a many-body response. These results show that molecular magnets can be a rich platform for studying time-crystalline behavior and possibly other out-of-equilibrium quantum many-body dynamics.

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