Evolution of vortex pinning in the FeSe$_{1-x}$S$_x$ system
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2020
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| _version_ | 1866908438306488320 |
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| author | Vlasenko, V. A. Sadakov, A. V. Romanova, T. A. Gavrilkin, S. U. Dik, A. V. Sobolevskiy, O. A. Massalimov, B. I. Chareev, D. A. Vasiliev, A. N. Maltsev, E. I. Kuzmicheva, T. E. |
| author_facet | Vlasenko, V. A. Sadakov, A. V. Romanova, T. A. Gavrilkin, S. U. Dik, A. V. Sobolevskiy, O. A. Massalimov, B. I. Chareev, D. A. Vasiliev, A. N. Maltsev, E. I. Kuzmicheva, T. E. |
| contents | We present a comprehensive study of vortex matter and pinning evolution in the FeSe$_{1-x}$S$_x$ system with various doping degree. The influence of sulphur substitution on vortex pinning and peak effect occurrence is studied. We show that there is a complex interplay among various pinning contributions in the FeSe$_{1-x}$S$_x$ system. Additionally, we study a possible vortex liquid-vortex glass/lattice transition and find an evidence that the vortex liquid-vortex glass phase transition in FeSe has a quasi two-dimensional nature. We investigate the upper critical field behaviour in FeSe$_{1-x}$S$_x$ system, and found that the upper critical field is higher than that predicted by the Werthamer-Helfand-Hohenberg (WHH) model, whereas its temperature dependence could be fitted within a two-band framework. Finally, a detailed H-T phase diagram is presented. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2007_09931 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Evolution of vortex pinning in the FeSe$_{1-x}$S$_x$ system Vlasenko, V. A. Sadakov, A. V. Romanova, T. A. Gavrilkin, S. U. Dik, A. V. Sobolevskiy, O. A. Massalimov, B. I. Chareev, D. A. Vasiliev, A. N. Maltsev, E. I. Kuzmicheva, T. E. Superconductivity We present a comprehensive study of vortex matter and pinning evolution in the FeSe$_{1-x}$S$_x$ system with various doping degree. The influence of sulphur substitution on vortex pinning and peak effect occurrence is studied. We show that there is a complex interplay among various pinning contributions in the FeSe$_{1-x}$S$_x$ system. Additionally, we study a possible vortex liquid-vortex glass/lattice transition and find an evidence that the vortex liquid-vortex glass phase transition in FeSe has a quasi two-dimensional nature. We investigate the upper critical field behaviour in FeSe$_{1-x}$S$_x$ system, and found that the upper critical field is higher than that predicted by the Werthamer-Helfand-Hohenberg (WHH) model, whereas its temperature dependence could be fitted within a two-band framework. Finally, a detailed H-T phase diagram is presented. |
| title | Evolution of vortex pinning in the FeSe$_{1-x}$S$_x$ system |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2007.09931 |