Ground state of the staggered Heisenberg-$Γ$ honeycomb model in a magnetic field
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866912399576006656 |
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| author | Ahmadi-Yazdi, Mojtaba Zare, Mohammad-Hossein Mosadeq, Hamid Fazileh, Farhad |
| author_facet | Ahmadi-Yazdi, Mojtaba Zare, Mohammad-Hossein Mosadeq, Hamid Fazileh, Farhad |
| contents | We study the ground state properties of the $S=\frac{1}{2}$ staggered Heisenberg-$Γ$ honeycomb model under a magnetic field based on analytical and numerical methods. Our calculations show that the conventional zigzag and stripy phases are favored because of the staggered Heisenberg interaction away from the pure $Γ$ limit. In our classical analysis, we find that the field induces a series of competing magnetic phases with relatively large unit cells in the region sandwiched between the two magnetic phases with long-range ordering. In the quantum treatment, these large magnetic unit cells are destabilized by strong quantum fluctuations that result in the stabilization of a gapless quantum spin liquid behavior. In a honeycomb $Γ$ magnet, we disclose an intermediate-field gapless quantum spin liquid phase driven by a tilted field away from the out-of-plane direction only for a narrow region between the low-field zigzag and high-field fully polarized phases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_17883 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Ground state of the staggered Heisenberg-$Γ$ honeycomb model in a magnetic field Ahmadi-Yazdi, Mojtaba Zare, Mohammad-Hossein Mosadeq, Hamid Fazileh, Farhad Strongly Correlated Electrons We study the ground state properties of the $S=\frac{1}{2}$ staggered Heisenberg-$Γ$ honeycomb model under a magnetic field based on analytical and numerical methods. Our calculations show that the conventional zigzag and stripy phases are favored because of the staggered Heisenberg interaction away from the pure $Γ$ limit. In our classical analysis, we find that the field induces a series of competing magnetic phases with relatively large unit cells in the region sandwiched between the two magnetic phases with long-range ordering. In the quantum treatment, these large magnetic unit cells are destabilized by strong quantum fluctuations that result in the stabilization of a gapless quantum spin liquid behavior. In a honeycomb $Γ$ magnet, we disclose an intermediate-field gapless quantum spin liquid phase driven by a tilted field away from the out-of-plane direction only for a narrow region between the low-field zigzag and high-field fully polarized phases. |
| title | Ground state of the staggered Heisenberg-$Γ$ honeycomb model in a magnetic field |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2310.17883 |