Oral presentation

Session Information

Location: Science and Cultural Center - FORTH
Day: 1. Wednesday 16th
Time: 14:30-15:00
Chairperson: to be announced…

Presentation Details

Presentation Type: Oral presentation
Title: From Magnetic Excitations to Computing Systems
Abstract: Spintronic computation offers a compelling route to computing beyond CMOS by exploiting magnetic degrees of freedom not only for data retention, as in MRAM, but also for information processing, with the long-term promise of high-density and ultralow-power logic. Its appeal lies in the possibility of combining non-volatility with logic primitives that are naturally expressed in magnetic media, including majority operations implemented through nanomagnet thresholding or spin-wave superposition, with the goal of reducing circuit area and energy for selected workloads. This paper will survey the landscape of spintronic logic from device concepts to circuit implications, covering domain-wall and nanomagnet-based devices, spin-wave/magnonic gates, magnetoelectric logic and transducers, and related majority-gate architectures. A particular emphasis will be placed on transducers between electrical and magnetic domains. In hybrid CMOS–spintronic systems, input/output conversion can dominate energy, delay, and area, so inefficient transducers may erase the benefits of low-energy magnetic propagation or computation. The talk will therefore connect logic concepts to the physical mechanisms used to write, manipulate, route, amplify, and read magnetic signals, contrasting MRAM-derived spin-torque and tunnel-magnetoresistance interfaces with emerging magnetoelectric approaches that promise more efficient capacitive coupling but still require further maturation. Finally, recent progress in hybrid spin-wave/CMOS integration will be discussed as an example of the transition from laboratory demonstrations toward practical systems. Phase-controlled CMOS circuitry can electrically excite spin waves, compare their phase to a reference, and digitize the result into binary values, illustrating how magnetic signals can be generated, detected, and interpreted in an integrated electronic environment.

Presenter

Dr Florin Ciubotaru
IMEC | Belgium

Authors

1. Ciubotaru, Florin | imec, 3001, Leuven, Belgium