UE-INN 27105
UNIDAD EJECUTORA INSTITUTO DE NANOCIENCIA Y NANOTECNOLOGIA
Unidad Ejecutora - UE
artículos
Título:
Effect of Ni doping on vortex pinning in CaK(F e1-x N ix)4 A s4 single crystals
Autor/es:
MINGYU XU ; S. L. BUD'KO; W. MEIER; P. C. CANFIELD; N. HABERKORN; J. SCHMIDT
Revista:
Physical Review B
Editorial:
American Physical Society
Referencias:
Lugar: New York; Año: 2019 vol. 100 p. 64524 - 64535
ISSN:
2469-9950
Resumen:
We study the correlation between chemical composition and vortex dynamics in Ni-doped CaK(Fe1-xNix)4As4 (x=0, 0.015, 0.025, 0.03, and 0.05) single crystals by performing measurements of the critical current densities Jc and the flux creep rates S. The magnetic relaxation of all the crystals is well described by the collective creep theory. The samples display a glassy exponent μ within the predictions for vortex bundles in a weak pinning scenario and relatively small characteristic pinning energy (U0
