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Current Patterns and Orbital Magnetism in Mesoscopic dc Transport

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Walz, Michael ; Wilhelm, Jan ; Evers, Ferdinand
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Date of publication of this fulltext: 11 Jun 2021 06:53


We present ab initio calculations of the local current density j(r) as it arises in dc-transport measurements. We discover pronounced patterns in the local current density, ring currents (“eddies”), that go along with orbital magnetism. Importantly, the magnitude of the ring currents can exceed the (average) transport current by orders of magnitude. We find associated magnetic fields that exhibit ...


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