In Plane Vortex Dynamic Anisotropy in the Iron Deficient Fe1-ySe Superconductor

We present electrical transport measurements in the superconducting dissipative state of crystalline iron deficient Fe1−ySe samples. These iron deficient samples were synthesized using NaCl/KCl flux and are characterized by the presence of correlated defects. The dissipation in electrical transport experiments, when the driving current is perpendicular or parallel to the crystal planes, depends strongly on the direction of the applied magnetic field, ( H=12T), within the sample plane. There is a dissipation modulation each 60° due to the presence of the correlated defects. We correlate these angular dependent features with the variation of the critical currents (Jc) changing the direction of H confined in the crystals planes. Jc was measured from magnetization loops at fixed temperatures and angles of H always within the basal planes.Fil: Ale Crivillero, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Amigó, María Lourdes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Franco, Diego Gaspar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Badía Majós, A.. Consejo Superior de Investigaciones Científicas; España. Universidad de Zaragoza; EspañaFil: Guimpel, Julio Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Nieva, Gladys Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentin

In plane vortex dynamic anisotropy in the iron deficient Fe1−y Se superconductor

et al.We present electrical transport measurements in the superconducting dissipative state of crystalline iron deficient Fe1−y Se samples. These iron deficient samples were synthesized using NaCl/KCl flux and are characterized by the presence of correlated defects. The dissipation in electrical transport experiments, when the driving current is perpendicular or parallel to the crystal planes, depends strongly on the direction of the applied magnetic field, (H=12T), within the sample plane. There is a dissipation modulation each 60º due to the presence of the correlated defects. We correlate these angular dependent features with the variation of the critical currents (Jc) changing the direction of H confined in the crystals planes. Jc was measured from magnetization loops at fixed temperatures and angles of H always within the basal planes.We thank Conicet PIP11220090100448 and Sectyp U.N.Cuyo for financial support. A. Badía acknowledges funding by Spanish MINECO and the European FEDER Program (Projects MAT2011-22719, ENE2011-29741) and by Gobierno de Aragón (Research Group T12, Grant FMI02/11).Peer reviewe