What type of study is this?

This is a Quantitative Study study.

October 3, 2025Open Access

Flux-flow in multiband FeSeₓTe₁-ₗ explored by microwave magnetotransport

AMAlessandro MagalottiRoma Tre University AAAndrea AlimentiRoma Tre University VBV. BracciniSuperconducting and other Innovative Materials and Devices Institute

Key Points

Flux-flow resistivity reveals insights into quasiparticle behavior in multiband superconductors.
The study shows typical field dependence of flux-flow, confirming multiband characteristics.
Temperature dependence of the orbital upper critical field is derived from our measurements.
Epitaxial FeSe$_x$Te$_{1-x}$ films appear to be in a moderately clean regime based on data.

Abstract

We measure the flux-flow resistivity in FeSeₓTe₁-ₗ epitaxial films using a microwave, dual-frequency technique. The flux-flow resistivity allows to open a window on the microscopic electronic state of quasiparticles. We obtain that the field-dependence of flux-flow is typical for multiband superconductors. Once this is assessed, we are able to extract the temperature dependence of the orbital upper critical field and of the normalised vortex core quasiparticle scattering time. Our data suggest that our epitaxial FeSeₓTe₁-ₗ films are in the moderately clean regime.

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Cite This Study

Magalotti et al. (Fri,) studied this question.

synapsesocial.com/papers/68e02f46f0e39f13e7fa2dd9 https://doi.org/https://doi.org/10.48550/arxiv.2509.04912

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