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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.18405 |
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| _version_ | 1866915005350281216 |
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| author | Yang, Aiqin Tao, Xiangru Quan, Yundi Zhang, Peng |
| author_facet | Yang, Aiqin Tao, Xiangru Quan, Yundi Zhang, Peng |
| contents | A recent experiment by Shan {\it et al} [arXiv:2304.09011] found that rhenium trioxide ReO$_3$, a simple metal at the ambient pressure, becomes superconducting with a transition temperature as high as 17 K at 30 GPa. In this paper, we analyze the electron-phonon origin of superconductivity in rhombohedral ReO$_3$ in detail. In addition, we also conduct a high-throughout screening of isostructural transition-metal trioxides XO$_3$ in searching for potential pressure-induced superconductors. Totally twenty-eight XO$_3$ compounds have been studied, in which four candidates RuO$_3$, OsO$_3$, IrO$_3$ and PtO$_3$ are predicted superconducting with the transition temperatures of 26.4, 30.3, 0.9 and 2.8 K at 30 GPa, respectively. Both IrO$_3$ and PtO$_3$ stay superconducting even at the ambient pressure. In ReO$_3$, RuO$_3, $OsO$_3$ and IrO$_3$, the conduction electrons around the Fermi level are dominantly from the X-d and the O-2p orbitals, and their electron-phonon coupling originates from the lattice dynamics of both the heavier transition-metal-atom and the oxygen-atom. Inclusion of spin-orbital coupling would mildly suppress the transition temperatures of these transition-metal trioxide superconductors except RuO$_3$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18405 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phonon-mediated superconductivity in transition-metal trioxides XO3 (X = Ru, Re, Os, Ir, Pt) under pressure Yang, Aiqin Tao, Xiangru Quan, Yundi Zhang, Peng Superconductivity A recent experiment by Shan {\it et al} [arXiv:2304.09011] found that rhenium trioxide ReO$_3$, a simple metal at the ambient pressure, becomes superconducting with a transition temperature as high as 17 K at 30 GPa. In this paper, we analyze the electron-phonon origin of superconductivity in rhombohedral ReO$_3$ in detail. In addition, we also conduct a high-throughout screening of isostructural transition-metal trioxides XO$_3$ in searching for potential pressure-induced superconductors. Totally twenty-eight XO$_3$ compounds have been studied, in which four candidates RuO$_3$, OsO$_3$, IrO$_3$ and PtO$_3$ are predicted superconducting with the transition temperatures of 26.4, 30.3, 0.9 and 2.8 K at 30 GPa, respectively. Both IrO$_3$ and PtO$_3$ stay superconducting even at the ambient pressure. In ReO$_3$, RuO$_3, $OsO$_3$ and IrO$_3$, the conduction electrons around the Fermi level are dominantly from the X-d and the O-2p orbitals, and their electron-phonon coupling originates from the lattice dynamics of both the heavier transition-metal-atom and the oxygen-atom. Inclusion of spin-orbital coupling would mildly suppress the transition temperatures of these transition-metal trioxide superconductors except RuO$_3$. |
| title | Phonon-mediated superconductivity in transition-metal trioxides XO3 (X = Ru, Re, Os, Ir, Pt) under pressure |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2410.18405 |