Skyrmionic Schrödinger cat states in monoaxial chiral magnets
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913145130319872 |
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| author | Liscak, Stefan Haller, Andreas Michels, Andreas Schmidt, Thomas L. Kuchkin, Vladyslav M. |
| author_facet | Liscak, Stefan Haller, Andreas Michels, Andreas Schmidt, Thomas L. Kuchkin, Vladyslav M. |
| contents | We study the low-energy excitation spectra of a spin-1/2 quantum Heisenberg model with a monoaxial Dzyaloshinskii-Moriya interaction. Using the density matrix renormalization group method, our analysis reveals a degeneracy between skyrmion and antiskyrmion states, enabling the formation of a mesoscopic Schrödinger cat state - a quantum superposition of these topologically distinct textures. To characterize this nontrivial state, we compute two-point spin correlation functions, highlighting signatures accessible via neutron scattering experiments. Furthermore, we demonstrate that applying a magnetic field gradient induces a coherent time evolution of the cat state, offering a controllable mechanism for its manipulation. These findings provide a framework for the detection of skyrmionic Schrödinger cat states in quantum magnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16020 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Skyrmionic Schrödinger cat states in monoaxial chiral magnets Liscak, Stefan Haller, Andreas Michels, Andreas Schmidt, Thomas L. Kuchkin, Vladyslav M. Mesoscale and Nanoscale Physics Strongly Correlated Electrons We study the low-energy excitation spectra of a spin-1/2 quantum Heisenberg model with a monoaxial Dzyaloshinskii-Moriya interaction. Using the density matrix renormalization group method, our analysis reveals a degeneracy between skyrmion and antiskyrmion states, enabling the formation of a mesoscopic Schrödinger cat state - a quantum superposition of these topologically distinct textures. To characterize this nontrivial state, we compute two-point spin correlation functions, highlighting signatures accessible via neutron scattering experiments. Furthermore, we demonstrate that applying a magnetic field gradient induces a coherent time evolution of the cat state, offering a controllable mechanism for its manipulation. These findings provide a framework for the detection of skyrmionic Schrödinger cat states in quantum magnets. |
| title | Skyrmionic Schrödinger cat states in monoaxial chiral magnets |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.16020 |