How many spin liquids are there in Ca$_{10}$Cr$_7$O$_{28}$?
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2017
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| _version_ | 1866910907630616576 |
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| author | Pohle, Rico Yan, Han Shannon, Nic |
| author_facet | Pohle, Rico Yan, Han Shannon, Nic |
| contents | The search for novel phases of matter is a central theme of modern physics, with some of the most intriguing examples provided by the spin liquids found in magnets with competing, or "frustrated" interactions. Ca$_{10}$Cr$_7$O$_{28}$, a novel spin-$1/2$ magnet with a bilayer breathing-kagome lattice, has properties which differ from from any known spin liquid. However, understanding Ca$_{10}$Cr$_7$O$_{28}$ presents a significant challenge, because of its complex frustration. Here we use large-scale molecular-dynamics simulation to explore the origin of spin-liquid behaviour in Ca$_{10}$Cr$_7$O$_{28}$. We uncover qualitatively different behaviour on different timescales, and argue that ground state of Ca$_{10}$Cr$_7$O$_{28}$ is born out of a slowly-fluctuating "spiral spin liquid", while faster fluctuations echo the U(1) spin liquid found in the kagome antiferromagnet. These results provide a concrete scenario for spin-liquid behaviour in Ca$_{10}$Cr$_7$O$_{28}$, and highlight the possibility of spin liquids existing on multiple timescales. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1711_03778 |
| institution | arXiv |
| publishDate | 2017 |
| record_format | arxiv |
| spellingShingle | How many spin liquids are there in Ca$_{10}$Cr$_7$O$_{28}$? Pohle, Rico Yan, Han Shannon, Nic Strongly Correlated Electrons The search for novel phases of matter is a central theme of modern physics, with some of the most intriguing examples provided by the spin liquids found in magnets with competing, or "frustrated" interactions. Ca$_{10}$Cr$_7$O$_{28}$, a novel spin-$1/2$ magnet with a bilayer breathing-kagome lattice, has properties which differ from from any known spin liquid. However, understanding Ca$_{10}$Cr$_7$O$_{28}$ presents a significant challenge, because of its complex frustration. Here we use large-scale molecular-dynamics simulation to explore the origin of spin-liquid behaviour in Ca$_{10}$Cr$_7$O$_{28}$. We uncover qualitatively different behaviour on different timescales, and argue that ground state of Ca$_{10}$Cr$_7$O$_{28}$ is born out of a slowly-fluctuating "spiral spin liquid", while faster fluctuations echo the U(1) spin liquid found in the kagome antiferromagnet. These results provide a concrete scenario for spin-liquid behaviour in Ca$_{10}$Cr$_7$O$_{28}$, and highlight the possibility of spin liquids existing on multiple timescales. |
| title | How many spin liquids are there in Ca$_{10}$Cr$_7$O$_{28}$? |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/1711.03778 |