Growth and Characterization of Superconducting Bulk Crystal [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) Misfit Layer Compounds
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866917567703023616 |
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| author | Shu, Ryufa Nagao, Masanori Yamamoto, Chiaya Arimoto, Keisuke Yamanaka, Junji Maruyama, Yuki Watauchi, Satoshi Tanaka, Isao |
| author_facet | Shu, Ryufa Nagao, Masanori Yamamoto, Chiaya Arimoto, Keisuke Yamanaka, Junji Maruyama, Yuki Watauchi, Satoshi Tanaka, Isao |
| contents | [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) ($m$ = 1-6, 8, and 12) highly orientated crystals 1-2 mm in size and well-defined c-planes were successfully grown using CsCl/KCl flux, including the first growth of crystals with $m = 12$. The stacked layers along the $c$ axis in the obtained crystals were directly observed by transmission electron microscopy as m alternating layers of SnSe and single layers of NbSe$_2$. The superconducting transition temperature of the obtained [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) crystals decreased with an increase in the number of SnSe layers per unit cell. As the superconducting anisotropy parameters increase, a significant increase is observed between $m = 4$ and 5. This indicates that the superconducting dimensionality becomes more two-dimensional with an increasing $m$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2401_07407 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Growth and Characterization of Superconducting Bulk Crystal [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) Misfit Layer Compounds Shu, Ryufa Nagao, Masanori Yamamoto, Chiaya Arimoto, Keisuke Yamanaka, Junji Maruyama, Yuki Watauchi, Satoshi Tanaka, Isao Superconductivity Materials Science [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) ($m$ = 1-6, 8, and 12) highly orientated crystals 1-2 mm in size and well-defined c-planes were successfully grown using CsCl/KCl flux, including the first growth of crystals with $m = 12$. The stacked layers along the $c$ axis in the obtained crystals were directly observed by transmission electron microscopy as m alternating layers of SnSe and single layers of NbSe$_2$. The superconducting transition temperature of the obtained [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) crystals decreased with an increase in the number of SnSe layers per unit cell. As the superconducting anisotropy parameters increase, a significant increase is observed between $m = 4$ and 5. This indicates that the superconducting dimensionality becomes more two-dimensional with an increasing $m$. |
| title | Growth and Characterization of Superconducting Bulk Crystal [(SnSe)$_{1+δ}$]$_m$(NbSe$_2$) Misfit Layer Compounds |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2401.07407 |