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We report on the anisotropy of the vortex motion surface impedance of a FeSexTe1-xthin film grown on a CaF2substrate. The dependence on the magnetic field intensity up to 1.2 T and direction, both parallel and perpendicular to the sample c-axis, was explored at fixed temperature at two distinct frequencies, ~ 16 GHz and ~ 27 GHz, by means of a bitonal dielectric resonator. The free flux flow resistivity &#x03C1;ffwas obtained by exploiting standard models for the high frequency dynamics, whereas the angle dependence was studied in the framework of the well known and widely used Blatter-Geshkenbein-Larkin (BGL) scaling theory for anistropic superconductors. Excellent agreement with the scaling law prescription by the fluxon flux flow resistivity was obtained. From the scaling analysis, a low-field mass anisotropy ~ 1.8was obtained, well within the value ranges reported in literature. The angular dependence of the pinning constant suggests that pinning is dominated by random, isotropic point pins, consistently with critical current density measurements.

Pinning, Flux Flow Resistivity, and Anisotropy of Fe(Se,Te) Thin Films From Microwave Measurements Through a Bitonal Dielectric Resonator