Enhanced Superconductivity and Vortex Dynamics in One-Dimensional TaS2 Nanowires
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909698011168768 |
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| author | Pollard, Mathew Ho, Visakha Wisner, Clarissa Bohannan, Eric Hor, Yew San |
| author_facet | Pollard, Mathew Ho, Visakha Wisner, Clarissa Bohannan, Eric Hor, Yew San |
| contents | We report the synthesis of high-quality 2H-TaS2 nanowires via a controlled two-step conversion process from TaS3 precursors, achieving robust superconductivity with a transition temperature Tc ~ 3.6 K which is significantly higher than bulk 2H-TaS2 (Tc ~ 0.8 K). Structural and compositional analyses confirm phase purity and preserved 1D morphology, while magnetotransport measurements reveal an enhanced upper critical field μoHc2 (2 K) ~ 5 T, far exceeding the bulk value (μoHc2 (0) ~ 1.17 T), attributed to dimensional confinement and suppression of charge density wave order. Magnetic characterization demonstrates complex vortex dynamics, including flux jumps and a second magnetization peak, indicative of strong pinning and crossover from elastic to plastic vortex regimes. These findings establish TaS2 nanowires as a versatile platform for studying superconductivity in reduced dimensions and exploiting confinement-driven quantum phenomena for advanced applications. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_15792 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhanced Superconductivity and Vortex Dynamics in One-Dimensional TaS2 Nanowires Pollard, Mathew Ho, Visakha Wisner, Clarissa Bohannan, Eric Hor, Yew San Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons We report the synthesis of high-quality 2H-TaS2 nanowires via a controlled two-step conversion process from TaS3 precursors, achieving robust superconductivity with a transition temperature Tc ~ 3.6 K which is significantly higher than bulk 2H-TaS2 (Tc ~ 0.8 K). Structural and compositional analyses confirm phase purity and preserved 1D morphology, while magnetotransport measurements reveal an enhanced upper critical field μoHc2 (2 K) ~ 5 T, far exceeding the bulk value (μoHc2 (0) ~ 1.17 T), attributed to dimensional confinement and suppression of charge density wave order. Magnetic characterization demonstrates complex vortex dynamics, including flux jumps and a second magnetization peak, indicative of strong pinning and crossover from elastic to plastic vortex regimes. These findings establish TaS2 nanowires as a versatile platform for studying superconductivity in reduced dimensions and exploiting confinement-driven quantum phenomena for advanced applications. |
| title | Enhanced Superconductivity and Vortex Dynamics in One-Dimensional TaS2 Nanowires |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2507.15792 |