https://www.spintec.fr/wp-content/uploads/2025/10/Plaquette_Spintec_2026.pdf
Context
The fields of nanomagnetism and spintronics are opening to 3D structures, giving rise to new fundamental effects and also creating opportunities for deep integration, compared with standard planar designs. New physical effects include magnetic anisotropy, magnetoresistance, spin-transfer torques, the topology of magnetization textures, magnonics etc… Concerning the latter two, specific effects are expected from the 3D spin degrees of freedom, curvature and closed boundary conditions. Cylindrical nanostructures are a textbook situation. This is a fast-developing topic, bringing together experts in chemical synthesis, nanofabrication, imaging and simulation, all developing ever-flexible tools. This field is the background of the Spin Textures research team of SPINTEC. We have recently developed several key systems, consisting of core-shell magnetic nanotubes and nanowires with chemical modulations. These are of crucial interest to translate spintronics in a 3D geometry, as spintronic effects are provided by interfaces. In this proposal, we are interested in investigating the propagation of spin waves in such structures, using domain walls or chemical modulations as a source of excitation. The first objective of this work is to address questions such as magnetic damping and non-reciprocal effects related to curvature. More will be discussed in the interview.
Work program & Skills acquired during internship
The chemical synthesis, combining several cutting-edge techniques, is conducted by several local and international collaborators, especially at IMDEA-Madrid. The candidate will be in charge of handling core- shell nanotubes and nanowires, contact them electrically in clean rooms, characterize them under dc and ac electrical stimulus, and use a combination of several magnetic microscopies to investigate domain-walls, chemical modulations, and the controlled excitation of spin waves. This may involve both in-lab measurements and stays at synchrotron-radiation facilities. The work is conducted jointly with colleagues from the theory group at SPINTEC and Institut Néel, providing a quick and effective support. Besides direct monitoring, the candidate benefits from weekly meetings in a collaborative environment including experts in electric measurements, advanced magnetic microscopy, and numerical/analytical micromagnetism. The candidate will learn nanofabrication techniques, electrical measurements and magnetic imaging, as well as a deep physical understanding of nanomagnetism and spintronics, providing a solid and broad basis to start a scientific research career, which we aim to be extended with a PhD project.
- Requested background: Master 2
- Duration: 6 months
- Start period: Feb/ March 2026
- Possibility of PhD thesis : YES