Frustrated Ising charge correlations in the kagome metal ScV$_6$Sn$_6$
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914977556725760 |
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| author | Alvarado, S. J. Gomez Pokharel, G. Ortiz, B. R. Paddison, Joseph A. M. Sarker, Suchismita Ruff, J. P. C. Wilson, Stephen D. |
| author_facet | Alvarado, S. J. Gomez Pokharel, G. Ortiz, B. R. Paddison, Joseph A. M. Sarker, Suchismita Ruff, J. P. C. Wilson, Stephen D. |
| contents | Here we resolve the real-space nature of the high-temperature, short-range charge correlations in the kagome metal ScV$_6$Sn$_6$. Diffuse scattering appears along a frustrated wave vector $\textbf{q}_H=(\frac{1}{3},\frac{1}{3},\frac{1}{2})$ at temperatures far exceeding the charge order transition $T_{CO}=92~\mathrm{K}$, preempting long-range charge order with wave vectors along $\textbf{q}_{\bar{K}}=(\frac{1}{3},\frac{1}{3},\frac{1}{3})$. Using a combination of real space and reciprocal space analysis, we resolve the nature of the interactions between the primary out-of-plane Sc-Sn chain instability and the secondary strain-mediated distortion of the in-plane V kagome network. A minimal model of the diffuse scattering data reveals a high-temperature, short-ranged "zig-zag" phase of in-plane correlations that maps to a frustrated triangular lattice Ising model with antiferromagnetic interactions and provides a real-space understanding of the origin of frustrated charge order in this material. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_12099 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Frustrated Ising charge correlations in the kagome metal ScV$_6$Sn$_6$ Alvarado, S. J. Gomez Pokharel, G. Ortiz, B. R. Paddison, Joseph A. M. Sarker, Suchismita Ruff, J. P. C. Wilson, Stephen D. Strongly Correlated Electrons Here we resolve the real-space nature of the high-temperature, short-range charge correlations in the kagome metal ScV$_6$Sn$_6$. Diffuse scattering appears along a frustrated wave vector $\textbf{q}_H=(\frac{1}{3},\frac{1}{3},\frac{1}{2})$ at temperatures far exceeding the charge order transition $T_{CO}=92~\mathrm{K}$, preempting long-range charge order with wave vectors along $\textbf{q}_{\bar{K}}=(\frac{1}{3},\frac{1}{3},\frac{1}{3})$. Using a combination of real space and reciprocal space analysis, we resolve the nature of the interactions between the primary out-of-plane Sc-Sn chain instability and the secondary strain-mediated distortion of the in-plane V kagome network. A minimal model of the diffuse scattering data reveals a high-temperature, short-ranged "zig-zag" phase of in-plane correlations that maps to a frustrated triangular lattice Ising model with antiferromagnetic interactions and provides a real-space understanding of the origin of frustrated charge order in this material. |
| title | Frustrated Ising charge correlations in the kagome metal ScV$_6$Sn$_6$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.12099 |