Superconductivity and weak anti-localization in nodal-line semimetal SnTaS2. (1st August 2022)

• Record Type: Journal Article
• Authors: Singh, M; Saha, P; Nagpal, V; Patnaik, S
• Is Part Of: Superconductor science & technology. Volume 35:Number 8(2022)
• Publication Date: 2022-08-01
• Subjects: superconductivity -- single crystal -- nodal-line semimetal; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/1361-6668/ac7586
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Topological semimetals with superconducting properties provide an emergent platform to explore the properties of topological superconductors. We report magnetization, and magneto-transport measurements on high quality single crystals of transition metal dichalcogenide SnTaS2 . It is a nodal line semimetal with superconducting transition below T c = 2.9 K. Moderate anisotropy ( γ = 3.1) is observed in upper critical fields along H // c and H // ab plane. In the normal state we observe large magneto-resistance and weak anti-localization effect that provide unambiguous confirmation of topological features in SnTaS2 . Therefore, genuine topological characteristics can be studied in this material, particularly with regard to microscopic origin of order parameter symmetry.