Microwave properties of Fe(Se,Te) thin films in a magnetic field: pinning and flux flow

We present here a microwave (16 GHz) investigation of the complex surface impedance in a dc magnetic field (up to 1 T) of Fe(Se,Te) thin ( 300 nm) films. We derive the vortex parameters: the flux-flow resistivity yields information on the dynamics of the quasiparticles, the Labusch parameter yields...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1559; no. 1; pp. 12055 - 12061
Main Authors Pompeo, Nicola, Alimenti, Andrea, Torokhtii, Kostiantyn, Sylva, Giulia, Braccini, Valeria, Silva, Enrico
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2020
Subjects
Elementary excitations
Flux pinning
Frequency ranges
Magnetic fields
Magnetic properties
Parameters
Physics
Slopes
Tellurium
Thin films
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Summary:We present here a microwave (16 GHz) investigation of the complex surface impedance in a dc magnetic field (up to 1 T) of Fe(Se,Te) thin ( 300 nm) films. We derive the vortex parameters: the flux-flow resistivity yields information on the dynamics of the quasiparticles, the Labusch parameter yields a measure of the steepness of the pinning potential wells, and the depinning frequency assesses the frequency range where the material is suitable for high-frequency applications in a dc magnetic field. We compare the results to the data obtained in YBCO, Nb and Nb3Sn.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1559/1/012055