Imec has demonstrated the generation and detection of spin waves in
sub-micron-sized magnetic waveguides with wavelengths smaller than 350nm
traveling over 10 micrometer during a 500nm wide waveguide, and has proposed models for threshold operation in nanoscale spin-wave structures.
Majority gates are devices where the state of the output is decided by the bulk of the inputs: if for instance quite 50 percent of the inputs are true, the output has got to return true.
The output of the spin-wave majority gate is then supported the interference of multiple spin waves that propagate during a so-called spin-wave bus, or waveguide. When miniaturized right down to the nanoscale, spin-wave majority gates could enable arithmetic circuits that are far more compact and energy-efficient than CMOS-based circuits.
Imec, together with the University of Kaiserslautern and Paris-Sud University, studied spin-wave propagation during a 10nm thick magnetic waveguide.
Importantly, they found that spin waves, excited by an RF-driven antenna, can travel quite 10 micrometers during a 500nm wide waveguide.
In a second experiment, they developed an all-electrical detection method for characterizing propagating spin waves during a magnetic bus. Spin waves with wavelengths as miniscule as 340nm might be detected—more than twice smaller than previously achieved industry results—paving the way towards scaled spin-wave conduits.
Through micromagnetic simulations, the operation of a nanoscaled fork-like spin-wave majority structure was successfully demonstrated. At these small dimensions, magneto-electric cells are used rather than antennas to excite and detect the spin waves. The proposed detection scheme allowed imec to capture the bulk phase results of the spin-wave interference during a very short time-frame , which was but three nanoseconds.
Source: https://timestech.in/imec-beyond-cmos-programme-demoes-spin-waves-majority-devices/
Majority gates are devices where the state of the output is decided by the bulk of the inputs: if for instance quite 50 percent of the inputs are true, the output has got to return true.
The output of the spin-wave majority gate is then supported the interference of multiple spin waves that propagate during a so-called spin-wave bus, or waveguide. When miniaturized right down to the nanoscale, spin-wave majority gates could enable arithmetic circuits that are far more compact and energy-efficient than CMOS-based circuits.
Imec, together with the University of Kaiserslautern and Paris-Sud University, studied spin-wave propagation during a 10nm thick magnetic waveguide.
Importantly, they found that spin waves, excited by an RF-driven antenna, can travel quite 10 micrometers during a 500nm wide waveguide.
In a second experiment, they developed an all-electrical detection method for characterizing propagating spin waves during a magnetic bus. Spin waves with wavelengths as miniscule as 340nm might be detected—more than twice smaller than previously achieved industry results—paving the way towards scaled spin-wave conduits.
Through micromagnetic simulations, the operation of a nanoscaled fork-like spin-wave majority structure was successfully demonstrated. At these small dimensions, magneto-electric cells are used rather than antennas to excite and detect the spin waves. The proposed detection scheme allowed imec to capture the bulk phase results of the spin-wave interference during a very short time-frame , which was but three nanoseconds.
Source: https://timestech.in/imec-beyond-cmos-programme-demoes-spin-waves-majority-devices/
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