From orbital to paramagnetic pair breaking in layered superconductor 2H-NbS2

被引：0

作者：

Pizzirani, D. ^{[1
,2
]}

Ottenbros, T. ^{[1
,2
]}

van Rijssel, M. ^{[1
,2
]}

Zheliuk, O. ^{[1
,2
]}

Kreminska, Y. ^{[3
]}

Rosner, M. ^{[2
]}

Linnartz, J. F. ^{[1
,2
]}

de Visser, A. ^{[4
]}

Hussey, N. E. ^{[1
,2
,5
]}

Ye, J. ^{[3
]}

Wiedmann, S. ^{[1
,2
]}

van Delft, M. R. ^{[1
,2
]}

机构：

[1] Radboud Univ Nijmegen, High Field Magnet Lab HFML EMFL, Toernooiveld 7, NL-6525 ED Nijmegen, Netherlands

[2] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

[3] Univ Groningen, Zernike Inst Adv Mat, Device Phys Complex Mat, NL-9747 AG Groningen, Netherlands

[4] Univ Amsterdam, Van Der Waals Zeeman Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[5] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, England

来源：

PHYSICAL REVIEW RESEARCH | 2024年 / 6卷 / 04期

基金：

荷兰研究理事会;

关键词：

ISING SUPERCONDUCTIVITY; CRITICAL-FIELD; TRANSITION; TRANSPORT;

D O I：

10.1103/PhysRevResearch.6.L042006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The superconducting transition-metal dichalcogenides 2H-NbSe2 and 2H-NbS2 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-NbS2 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-NbS2 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.

引用

页数：7

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