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Thesis
Home   /   Thesis   /   Transport and noise in magnetic tunnel junctions

Transport and noise in magnetic tunnel junctions

Condensed matter physics, chemistry & nanosciences Emerging materials and processes for nanotechnologies and microelectronics Solid state physics, surfaces and interfaces Technological challenges

Abstract

Spin electronics is a powerful physics based not only on charge, but also on electron spin. Already widely used for hard disk read heads, it offers integrated and miniaturized solutions for the highly sensitive measurement of magnetic fields, as well as for logic and memory devices.

On the one hand, the noise of an electronic system contains a wealth of physics that provides fine-grained access to the system's transport and magnetization components, but it is also a fundamental element in the evaluation of a device's performance [Lei 2011]. For magnetic field measurement, noise is the intrinsic measurement limit of the system.

This thesis therefore aims to study magnetic tunneling systems through noise measurement, which will include both amorphous or polycrystalline systems and crystalline systems, and will include the study of paramagnetic inclusions that modify the tunneling transport regime and may, under certain conditions, give rise to a phenomenon of inversion of the current-voltage curve [Katcko 2019], [Chowrira 2022].

[Lei 2011] Z. Q. Lei, et al, IEEE Trans. Mag. 43 602 (2011)
[Katcko 2019] Katcko et al, Comm. Phys. 2 116 (2019)
[Chowrira 2022] B. Chowrira et al, Adv. Mater., 34, 2206688 (2022)

Laboratory

Institut rayonnement et matière de Saclay
Service de Physique de l’Etat Condensé
Laboratoire Nano-Magnétisme et Oxydes
Paris-Saclay
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