Spintronic devices are considered very promising candidates to complement CMOS technology to further improve their capabilities as well as to enable additional functionalities as non-volatility or reconfigurability of logic circuits. Concepts based on nano-magnetic elements, domain walls and spin waves have been proposed for both Boolean and non-Boolean logic operations.
Devices based on spin waves have high potential for power and area reduction per computing throughput. The information can be encoded in either the amplitude or the phase of the wave, while the logic operation is based on the interference of spin waves, which is a keystone for the realization of logic gates. To be competitive with actual CMOS technology the spin wave devices need to tackle waves with wavelengths below 100 nm and a miniaturization down to the nanoscale. Thus, the understanding of the properties of spin waves as their generation and propagation, the phase control and the interference mechanism at the nano-scale are of fundamental importance for the realization of the logic gates.
Within this thesis, the student will participate to the fabrication of spin-wave devices based on different magnetic materials, from micro- down to the nanoscale and will contribute to their characterization in the microwave frequency range leading to important properties as spin wave dispersion relation, their damping and their propagation characteristics in the linear and non-linear regimes, including a phase analysis. The results will be an important step to understand the emission, the routing and the combination/interference of spin waves to continue the assessment of the concept devices as alternatives or complements to CMOS transistors in future technology nodes. The experimental work will be performed in close collaboration with modeling activities (materials, devices, circuits) in the spintronics group at imec. The student should have a strong interest in nanofabrication in a cleanroom environment as well as in leading edge research topics on magnetism and magnetic materials.
Type of project: Combination of internship and thesis, Thesis, Internship
Duration: > 6 Months
Required degree: Master of Science, Master of Engineering Science, Master of Engineering Technology
Required background: Nanoscience & Nanotechnology, Physics
Imec allowance will be provided for students studying at a non-Belgian university.