Magnetotransport properties in the magnetic phase of BaFe2−xTxAs2(T=Co,Ni): A magnetic excitations approach

Because of their complex Fermi surfaces, the identification of the physical phenomena contributing to electronic scattering in the Fe-based superconductors is a difficult task. Here, we report on the electrical resistivity, magnetoresistance, and Hall effect in two series of BaFe2−xTxAs2(T=Co,Ni) cr...

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Bibliographic Details
Published in:Physical review. B 2018-03, Vol.97 (10)
Main Authors: Peña, J P, Piva, M Piva, S Rosa, P F, Pagliuso, P G, Adriano, C, Grant, T, Fisk, Z, Baggio-Saitovitch, E, Pureur, P
Format: Article
Language:English
Subjects:
Conduction bands
Crystal structure
Current carriers
Fermi surfaces
Hall effect
Magnetic properties
Magnetism
Magnetoresistance
Magnetoresistivity
Scattering
Single crystals
Superconductors
Transport properties
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Summary:Because of their complex Fermi surfaces, the identification of the physical phenomena contributing to electronic scattering in the Fe-based superconductors is a difficult task. Here, we report on the electrical resistivity, magnetoresistance, and Hall effect in two series of BaFe2−xTxAs2(T=Co,Ni) crystals with different values of x. The T contents were chosen so that the majority of the investigated samples present an intermediate magnetically ordered state and a superconducting ground state. We interpret the obtained results in terms of scattering of charge carriers by magnetic excitations instead of describing them as resulting uniquely from effects related to multiple-band conduction. Our samples are single crystals from the structural point of view and their overall magnetotransport properties are dominated by a single magnetic state.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.97.104502