Visualization of Current-Driven Vortex Formation in High-$T_c$ Cuprate Superconductors
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917102279983104 |
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| author | Nishimura, Shunsuke Tsuji, Takeyuki Iwasaki, Takayuki Hatano, Mutsuko Sasaki, Kento Kobayashi, Kensuke |
| author_facet | Nishimura, Shunsuke Tsuji, Takeyuki Iwasaki, Takayuki Hatano, Mutsuko Sasaki, Kento Kobayashi, Kensuke |
| contents | Type-II superconductors exhibit hysteretic behavior due to the presence of quantum vortices, and the order in which temperature and external field are varied plays a decisive role. Here we take current, rather than magnetic field, as the external drive. We image the magnetic field of a high-$T_c$ cuprate superconductor strip after cooling. We confirm that even in zero magnetic field, current-biased cooling nucleates vortices within the strip. With a small external magnetic field, the distribution is polarized opposite to the Lorentz-force direction. These behaviors follow from the self-consistent relation between current and local field in steady flux flow. Our findings show that current history is encoded as vortices. This reveals self-field effects that influence dc measurements and glassy transitions under drive. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_19896 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Visualization of Current-Driven Vortex Formation in High-$T_c$ Cuprate Superconductors Nishimura, Shunsuke Tsuji, Takeyuki Iwasaki, Takayuki Hatano, Mutsuko Sasaki, Kento Kobayashi, Kensuke Superconductivity Type-II superconductors exhibit hysteretic behavior due to the presence of quantum vortices, and the order in which temperature and external field are varied plays a decisive role. Here we take current, rather than magnetic field, as the external drive. We image the magnetic field of a high-$T_c$ cuprate superconductor strip after cooling. We confirm that even in zero magnetic field, current-biased cooling nucleates vortices within the strip. With a small external magnetic field, the distribution is polarized opposite to the Lorentz-force direction. These behaviors follow from the self-consistent relation between current and local field in steady flux flow. Our findings show that current history is encoded as vortices. This reveals self-field effects that influence dc measurements and glassy transitions under drive. |
| title | Visualization of Current-Driven Vortex Formation in High-$T_c$ Cuprate Superconductors |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2511.19896 |