Evidence for the Fulde–Ferrell–Larkin–Ovchinnikov state in bulk NbS2

Chang-woo Cho, Jian Lyu, Cheuk Yin Ng, James Jun He, Kwan To Lo, Dmitriy Chareev, Tarob A. Abdel-Baset, Mahmoud Abdel-Hafiez and Rolf Lortz ()
Additional contact information
Chang-woo Cho: The Hong Kong University of Science and Technology
Jian Lyu: The Hong Kong University of Science and Technology
Cheuk Yin Ng: The Hong Kong University of Science and Technology
James Jun He: RIKEN Center for Emergent Matter Science (CEMS)
Kwan To Lo: The Hong Kong University of Science and Technology
Dmitriy Chareev: Institute of Experimental Mineralogy of Russian Academy of Sciences
Tarob A. Abdel-Baset: Taibah University
Mahmoud Abdel-Hafiez: Fayoum University
Rolf Lortz: The Hong Kong University of Science and Technology

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract We present measurements of the magnetic torque, specific heat and thermal expansion of the bulk transition metal dichalcogenide (TMD) superconductor NbS2 in high magnetic fields, with its layer structure aligned strictly parallel to the field using a piezo rotary positioner. The upper critical field of superconducting TMDs in the 2D form is known to be dramatically enhanced by a special form of Ising spin orbit coupling. This Ising superconductivity is very robust to the Pauli paramagnetic effect and can therefore exist beyond the Pauli limit for superconductivity. We find that superconductivity beyond the Pauli limit still exists in bulk single crystals of NbS2 for a precisely parallel field alignment. However, the comparison of our upper critical field transition line with numerical simulations rather points to the development of a Fulde-Ferrell-Larkin-Ovchinnikov state above the Pauli limit as a cause. This is also consistent with the observation of a magnetic field driven phase transition in the thermodynamic quantities within the superconducting state near the Pauli limit.

Date: 2021
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-021-23976-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23976-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-23976-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().