From orbital to paramagnetic pair breaking in layered superconductor 2H-NbS$_2$
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913801498001408 |
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| author | Pizzirani, Davide Ottenbros, Thom van Rijssel, Maró Zheliuk, Oleksandr Kreminska, Yulia Rösner, Malte Linnartz, Jasper de Visser, Anne Hussey, Nigel Ye, Jianting Wiedmann, Steffen van Delft, Maarten |
| author_facet | Pizzirani, Davide Ottenbros, Thom van Rijssel, Maró Zheliuk, Oleksandr Kreminska, Yulia Rösner, Malte Linnartz, Jasper de Visser, Anne Hussey, Nigel Ye, Jianting Wiedmann, Steffen van Delft, Maarten |
| contents | The superconducting transition metal dichalcogenides 2H-NbSe$_2$ and 2H-NbS$_2$ are intensively studied on account of their unique electronic properties such as Ising superconductivity, found in multi- and monolayers, with upper critical fields beyond the Pauli limit. Even in bulk crystals, there are reports of multiband superconductivity and exotic states, such as the Fulde-Ferrell-Larkin-Ovchinnikov phase. In this work, we investigate the superconducting properties of 2H-NbS$_2$ through a detailed high-field mapping of the phase diagram by means of magnetotransport and magnetostriction experiments. We compare the phase diagram between bulk crystals and a 6~nm thick flake of 2H-NbS$_2$ and find a drastically enhanced Maki parameter in the flake, signifying a change of the relevant pair breaking mechanism from orbital to paramagnetic pair breaking, which we attribute to an effect of enhanced spin-orbit coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_03461 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | From orbital to paramagnetic pair breaking in layered superconductor 2H-NbS$_2$ Pizzirani, Davide Ottenbros, Thom van Rijssel, Maró Zheliuk, Oleksandr Kreminska, Yulia Rösner, Malte Linnartz, Jasper de Visser, Anne Hussey, Nigel Ye, Jianting Wiedmann, Steffen van Delft, Maarten Superconductivity Mesoscale and Nanoscale Physics The superconducting transition metal dichalcogenides 2H-NbSe$_2$ and 2H-NbS$_2$ are intensively studied on account of their unique electronic properties such as Ising superconductivity, found in multi- and monolayers, with upper critical fields beyond the Pauli limit. Even in bulk crystals, there are reports of multiband superconductivity and exotic states, such as the Fulde-Ferrell-Larkin-Ovchinnikov phase. In this work, we investigate the superconducting properties of 2H-NbS$_2$ through a detailed high-field mapping of the phase diagram by means of magnetotransport and magnetostriction experiments. We compare the phase diagram between bulk crystals and a 6~nm thick flake of 2H-NbS$_2$ and find a drastically enhanced Maki parameter in the flake, signifying a change of the relevant pair breaking mechanism from orbital to paramagnetic pair breaking, which we attribute to an effect of enhanced spin-orbit coupling. |
| title | From orbital to paramagnetic pair breaking in layered superconductor 2H-NbS$_2$ |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2404.03461 |