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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/118824

Defect Dynamics in Artificial Colloidal Ice: Real-Time Observation, Manipulation, and Logic Gate

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We study the defect dynamics in a colloidal spin ice system realized by filling a square lattice of topographic double well islands with repulsively interacting magnetic colloids. We focus on the contraction of defects in the ground state, and contraction or expansion in a metastable biased state. Combining real-time experiments with simulations, we prove that these defects behave like emergent topological monopoles obeying a Coulomb law with an additional line tension. We further show how to realize a completely resettable 'nor' gate, which provides guidelines for fabrication of nanoscale logic devices based on the motion of topological magnetic monopoles.

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LOEHR, Johannes, ORTIZ-AMBRIZ, Antonio i TIERNO, Pietro. Defect Dynamics in Artificial Colloidal Ice: Real-Time Observation, Manipulation, and Logic Gate. Physical Review Letters. 2016. Vol. 117, núm. 168001-1-168001-5. ISSN 0031-9007. [consulta: 10 de maig de 2026]. Disponible a: https://hdl.handle.net/2445/118824

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