Relativistic Effects in LaBi$_2$ Thin Films
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866908826254442496 |
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| author | Dorrian, Reiley Song, Sungmin Kim, Jinwoong Ohno, Mizuki Jhi, Seung-Hoon Kioussis, Nicholas Falson, Joseph |
| author_facet | Dorrian, Reiley Song, Sungmin Kim, Jinwoong Ohno, Mizuki Jhi, Seung-Hoon Kioussis, Nicholas Falson, Joseph |
| contents | Chemical substitution in crystalline quantum materials is a powerful way to explore the consequences of strong spin-orbit coupling on their structural and electronic properties. In this work, we present an investigation of thin films of the La$\textit{Pn}_2$ ($\textit{Pn}$~=~Sb, Bi) class of layered square-net intermetallics. We report the growth of LaBi$_2$ with a pristine layer-by-layer growth mode, classifying it as a good metal displaying superconductivity at $\sim$0.55~K. Compared to LaSb$_2$, we attribute the enhanced metallic behavior and improved growth dynamics of LaBi$_2$ to significant relativistic corrections to its electronic band structure and the resulting impact on both surface energy and intrinsic phonon scattering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_09975 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Relativistic Effects in LaBi$_2$ Thin Films Dorrian, Reiley Song, Sungmin Kim, Jinwoong Ohno, Mizuki Jhi, Seung-Hoon Kioussis, Nicholas Falson, Joseph Materials Science Superconductivity Chemical substitution in crystalline quantum materials is a powerful way to explore the consequences of strong spin-orbit coupling on their structural and electronic properties. In this work, we present an investigation of thin films of the La$\textit{Pn}_2$ ($\textit{Pn}$~=~Sb, Bi) class of layered square-net intermetallics. We report the growth of LaBi$_2$ with a pristine layer-by-layer growth mode, classifying it as a good metal displaying superconductivity at $\sim$0.55~K. Compared to LaSb$_2$, we attribute the enhanced metallic behavior and improved growth dynamics of LaBi$_2$ to significant relativistic corrections to its electronic band structure and the resulting impact on both surface energy and intrinsic phonon scattering. |
| title | Relativistic Effects in LaBi$_2$ Thin Films |
| topic | Materials Science Superconductivity |
| url | https://arxiv.org/abs/2602.09975 |