Spintronics with bacteria

Benjamin Zingsem; Thomas Feggeler; Michael Winklhofer; Michael Farle

doi:10.1117/12.2596037

5 August 2021 Spintronics with bacteria

Benjamin Zingsem, Thomas Feggeler, Michael Winklhofer, Michael Farle

Proceedings Volume 11805, Spintronics XIV; 118052B (2021) https://doi.org/10.1117/12.2596037
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Spin wave logic circuits using quantum oscillations of spins (magnons) as carriers of information have been proposed for next generation computing with reduced energy demands and the benefit of easy parallelization. Current realizations of magnonic devices have micrometer sized patterns. Here we demonstrate the feasibility of biogenic nanoparticle chains as the first step to truly nanoscale magnonics at room temperature. Our measurements on magnetosome chains (ca 12 magnetite crystals with 35 nm particle size each), combined with micromagnetic simulations, show that the topology of the magnon bands, namely anisotropy, band deformation, and band gaps are determined by local arrangement and orientation of particles, which in turn depends on the genotype of the bacteria. Our biomagnonic approach offers the exciting prospect of genetically engineering magnonic quantum states in nanoconfined geometries. By connecting mutants of magnetotactic bacteria with different arrangements of magnetite

Conference Presentation

Citation Download Citation

Benjamin Zingsem, Thomas Feggeler, Michael Winklhofer, and Michael Farle "Spintronics with bacteria", Proc. SPIE 11805, Spintronics XIV, 118052B (5 August 2021); https://doi.org/10.1117/12.2596037

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