Anomalous transverse magnetoresistance in superconductor/ferromagnet multilayers
ORAL
Abstract
We have studied the magnetoresistance of metallic multilayers composed of a low-Tc superconductor (MoSi) and different ferromagnets (from single Co layers to combinations of these with heavy-elements) which present variable magnetic anisotropy and domain structure. In some cases, the longitudinal magnetoresistance shows a strong magnetic hysteresis that results from the interaction of flux quanta in the superconductor and the stray field from the ferromagnet's domains. Interestingly, that behavior is accompanied by an anomalous transverse magnetoresistance whose parity depends on the direction of the magnetic field relative to the ferromagnet's easy axis. We will discuss the different scenarios allowing for an understanding of these effects.
*Work supported by ERC grant 647100 “SUSPINTRONICS” and French ANR grant ANR-15-CE24-0008-01 “SUPERTRONICS".
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Presenters
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Javier Villegas
- Unité mixte de physique CNRS-Thales, Palaiseau, France
- Unité Mixte de Physique CNRS/Thales, Palaiseau, France
- Unité Mixté de physique, CNRS