ONLINE - PhD Mid-term Seminar Series: Nanomagnetic logic via photothermal excitation of nanomagnetic networks
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ONLINE - PhD Mid-term Seminar Series: Nanomagnetic logic via photothermal excitation of nanomagnetic networks
CIC nanoGUNE Seminars
- Speaker
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Matteo Menniti, Nanomagnetism Group
- When
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2021/09/06
13:00
- Place
- nanoGUNE online Webinar
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**Nanomagnetic logic via photothermal excitation of nanomagnetic networks**
Matteo Menniti
Nanonmagnetism Group, CIC nanoGUNE
The magnetic interaction of bi-stable single domain magnetic nanoparticle has
been subject of interesting studies thanks to its capabilities of emulating
the interactions of atomic spin. The geometrical constraints in these
interaction give rise to a degeneration of the ground energy of the system,
also known as frustration. These systems, known as Artificial Spin Ice(ASI),
has been used to study phenomena such as: phase transitions, frustrations,
magnetic monopoles etc. The bi-stability (1 and 0) of these single domain
particles combined with their ability to influence one-another via the
magnetostatic interactions makes them interesting candidates for computing
applications. Previous studies have shown that by setting the initial energy
of an ASI system the thermal relaxation to a ground state computes the result
of Boolean operations of said ASI. These thermal relaxation have been studied
by means of globally heating the whole ASI. Here we propose a way to tune the
relaxation pathway by selectively heating individual particles by means of
thermoplasmonics. By tuning the dimensions of a metallic nanoparticle, thus
the plasmonic resonance frequency, the absorption of the electromagnetic
energy (polarized light) at given wavelength is enhanced and a large
temperature increase of the particle is achieved.
In this talk we will describe the design process of a reconfigurable hybrid
nanomagnetic-thermoplasmonic Boolean logic using an ASI system.
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PhD Mid-term Seminar Series: Mikel Quintana & Matteo Menniti \- CIC nanoGUNE
When: Sep 6, 2021 11:00 AM
**Join Zoom Meeting**
* https://us06web.zoom.us/meeting/register/tZUpc-ygqz0jEtxllcg7JRHQsAjyrqSNyQ0b
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