Intrinsic pinning by naturally occurring correlated defects in FeSe 1− x Te x superconductors

2017/03/17 by M. L. Amigó, M L Amigó, M. V. Ale Crivillero +17 · 10 citations
Materials Science · Physics and Astronomy · #Dissipation #Flux pinning #High-temperature superconductivity #Iron-based superconductors research #Matching (statistics) #Physics of Superconductivity and Magnetism #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.supr-con

paper · pdf · doi:10.1088/1361-6668/aa757c

published in Superconductor Science and Technology 30(8), 085010 (IOP Publishing)

arxiv created 2017/03/17 · openalex created_date 2017/04/07 · openalex publication_date 2017/05/30 · arxiv updated 2017/10/03 · openalex updated_date 2026/08/05

Abstract

Abstract We study the angular dependence of dissipation in the superconducting state of FeSe and Fe(Se 1− x Te x ) through electrical transport measurements, using crystalline intergrown materials. We reveal the key role of the inclusions of the non superconducting magnetic phase Fe 1− y (Se 1− x Te x ), growing into the Fe(Se 1− x Te x ) pure β -phase, in the development of a correlated defect structure. The matching of both atomic structures defines the growth habit of the crystalline material as well as the correlated planar defects orientation.

Citations

• Review of Fe Chalcogenides as the Simplest Fe-Based Superconductor
• Tetragonal-to-Orthorhombic Structural Phase Transition at 90 K in the SuperconductorFe1.01Se
• Evidence for dominant Pauli paramagnetic effect in the upper critical field of single-crystallineFeTe0.6Se0.4
• Weak Superconducting Fluctuations and Small Anisotropy of the Upper Critical Fields in an Fe1.05Te0.85Se0.15 Single Crystal
• Growth and superconductivity of FeSex crystals