Domaines
Condensed matter
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type de stage
Expérimental Description
The growing demand for faster, smaller, and more energy-efficient electronics drives research into new physical principles for information processing. Our project, SAWSiX, explores a novel concept: using magnetic nanodevices to generate and detect sound waves, or acoustic phonons, by exploiting the coupling between a material’s magnetic properties and its mechanical vibrations.
This internship, which is part of the ANR JCJC project, offers the opportunity to contribute to the early stages of this research and explore how to “turn spin into sound.” The goal is to show that a Spin Hall Nano-Oscillator (SHO) can generate high-frequency acoustic waves when driven by an electric current. The device will be fabricated on a piezoelectric substrate (lithium niobate, LiNbO₃) that links its mechanical properties to the SHO’s magnetic dynamics.
The student will take part in all key steps: cleanroom fabrication, electrical testing, and phonon detection using Interdigital Transducers (IDTs) and micro-Brillouin Light Scattering (µBLS). Numerical simulations may also be performed to model and interpret the device behavior.
This internship offers hands-on experience in nanofabrication, high-frequency spintronics, and optical spectroscopy. It can be extended into a fully funded PhD (3 years) supported by the ANR JCJC project, contributing to a new hybrid platform for nanoscale sound generation with applications in microwave signal processing and sensing.
Contact
Alexandre HAMADEH