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Ultrafast Phonon-Driven Switching in Multiferroic Materials

CORDIS · observation · Publication date unknown

ortest possible time is a fundamental challenge in physics, as faster switching typically requires higher energy. The challenge is increasingly urgent, as the rapid rise of the Internet of Things and Artificial Intelligence has surged the energy demand of data centers, making them a significant source of global carbon emissions. To enable a sustainable digital future, we need computing devices that operate in less than a trillionth of a second while consuming below a femtojoule per bit. Controlling magnetization with electric fields in multiferroic materials, at energy costs in the attojoule range, offers a promising route. However, under ultrafast operation, the energy exchange between spins, electric polarization, and phonons undergoes dramatic changes. The lack of effective control strategies leads to heat losses and limits switching efficiency. UPSHIFT aims to establish new principles and benchmarks for ultrafast, energy-efficient switching of multiferroics. I will use intense THz electric fields (MV-GV/cm) to coherently excite lattice vibrations at selected phonon frequencies i

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recordType

award

status

SIGNED

region

EU

value

232916.16

unit

EUR