Abstract

We report the synthesis of high-quality 2H-TaS2 nanowires via a controlled two-step conversion process from TaS3 precursors, achieving robust superconductivity with a transition temperature T c ≈ 3.6K, which is significantly higher than bulk 2H-TaS2 (T c ≈ 0.8K). Structural and compositional analyses confirm phase purity and preserved one-dimensional morphology, while magneto transport measurements reveal an enhanced upper critical field μ 0 H c2 (2K)≈5 T, far exceeding the bulk value (μ0Hc2 (0)≈1.17T), attributed to dimensional confinement and suppression of charge-density wave order. Magnetic characterization demonstrates complex vortex dynamics, including flux jumps and a second magnetization peak, indicative of strong pinning and crossover from elastic to plastic vortex regimes. These findings establish TaS2 nanowires as a versatile platform for studying superconductivity in reduced dimensions and exploiting confinement-driven quantum phenomena for advanced applications.

Department(s)

Chemistry

Second Department

Physics

Comments

Materials Research Science and Engineering Center, Northwestern University, Grant None

International Standard Serial Number (ISSN)

1077-3118; 0003-6951

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2026 American Institute of Physics, All rights reserved.

Publication Date

05 Jan 2026

Download

Full Text Link

Share

 
COinS