Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals
We present a qualitatively investigation on the influence of thermal fluctuation on flux motion and vortex dynamic of (Li0.8Fe0.2)OHFeSe single crystals. The importance of thermal fluctuations has been assessed through the Ginzburg number Gi. The resistivity in the mixed state for (Li0.8Fe0.2)OHFeSe...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379724002547 |
| _version_ | 1797213366188507136 |
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| author | Yuxian Wu Yong Li Zhiwei Wen Shulong Li Yongliang Chen Yong Zhao |
| author_facet | Yuxian Wu Yong Li Zhiwei Wen Shulong Li Yongliang Chen Yong Zhao |
| author_sort | Yuxian Wu |
| collection | DOAJ |
| description | We present a qualitatively investigation on the influence of thermal fluctuation on flux motion and vortex dynamic of (Li0.8Fe0.2)OHFeSe single crystals. The importance of thermal fluctuations has been assessed through the Ginzburg number Gi. The resistivity in the mixed state for (Li0.8Fe0.2)OHFeSe exhibits a thermally activated behavior investigated by TAFF theory. The field-dependent activation energy follows the relation U0 (H) ∼ H-α. The appearance of crossover at 2 T is related to the different pinning mechanisms. Single-vortex pinning occurs in the low fields range at H < 2 T, and collective pinning dominates in the region of field higher than 2 T. The vortex phase diagram from glass state to liquid state has been discussed based on the vortex-glass theory. Due to the influence of thermal fluctuations, there is a broad vortex liquid regime in the vortex phase diagram. |
| first_indexed | 2024-04-24T10:57:08Z |
| format | Article |
| id | doaj.art-1e81236821d148188fbd117f81faa2cd |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-24T10:57:08Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-1e81236821d148188fbd117f81faa2cd2024-04-12T04:45:12ZengElsevierResults in Physics2211-37972024-04-0159107571Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystalsYuxian Wu0Yong Li1Zhiwei Wen2Shulong Li3Yongliang Chen4Yong Zhao5Institute for Advanced Study, Chengdu University, Chengdu 610106, China; Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaCollege of Physics and Engineering, Chengdu Normal University, Chengdu 611130, ChinaKey Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaInstitute for Advanced Study, Chengdu University, Chengdu 610106, ChinaKey Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China; Corresponding authors at: College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China (Y. Zhao).Institute for Advanced Study, Chengdu University, Chengdu 610106, China; Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fuzhou 350117, China; College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China; Corresponding authors at: College of Physics and Energy, Fujian Normal University, Fuzhou 350117, China (Y. Zhao).We present a qualitatively investigation on the influence of thermal fluctuation on flux motion and vortex dynamic of (Li0.8Fe0.2)OHFeSe single crystals. The importance of thermal fluctuations has been assessed through the Ginzburg number Gi. The resistivity in the mixed state for (Li0.8Fe0.2)OHFeSe exhibits a thermally activated behavior investigated by TAFF theory. The field-dependent activation energy follows the relation U0 (H) ∼ H-α. The appearance of crossover at 2 T is related to the different pinning mechanisms. Single-vortex pinning occurs in the low fields range at H < 2 T, and collective pinning dominates in the region of field higher than 2 T. The vortex phase diagram from glass state to liquid state has been discussed based on the vortex-glass theory. Due to the influence of thermal fluctuations, there is a broad vortex liquid regime in the vortex phase diagram.http://www.sciencedirect.com/science/article/pii/S2211379724002547Thermal fluctuationsFlux flowVortex dynamicPinning mechanisms |
| spellingShingle | Yuxian Wu Yong Li Zhiwei Wen Shulong Li Yongliang Chen Yong Zhao Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals Results in Physics Thermal fluctuations Flux flow Vortex dynamic Pinning mechanisms |
| title | Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals |
| title_full | Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals |
| title_fullStr | Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals |
| title_full_unstemmed | Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals |
| title_short | Effect of thermal fluctuations on the flux motion and vortex dynamic in (Li0.8Fe0.2)OHFeSe single crystals |
| title_sort | effect of thermal fluctuations on the flux motion and vortex dynamic in li0 8fe0 2 ohfese single crystals |
| topic | Thermal fluctuations Flux flow Vortex dynamic Pinning mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S2211379724002547 |
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