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arXiv · 1211.1538

Correlation-mediated processes for electron-induced switching between Neel states of Fe anti-ferromagnetic chains

Jean-Pierre Gauyacq·Simeon Moises Yaro·Xavier Cartoixa·Nicolas Lorente
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Abstract

The controlled switching between two quasi-stable Neel states in adsorbed anti-ferromagnetic Fe chains has recently been achieved by Loth et al [Science 335, 196 (2012)]. In order to rationalize their data, we evaluate the rate of tunneling electron-induced switching between the Néel states. Good agreement is found with the experiment permitting us to identify three switching mechanisms: (i) low-bias direct electron-induced transitions, (ii) intermediate-bias switching via spin-wave-like excitation, and (iii) high-bias transitions mediated by domain wall formation. Spin correlations in the anti-ferromagnetic chains are the switching driving force leading to a marked chain-size dependence.

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Jean-Pierre Gauyacq, Simeon Moises Yaro, Xavier Cartoixa, Nicolas Lorente. 2012-11-07. Correlation-mediated processes for electron-induced switching between Neel states of Fe anti-ferromagnetic chains. https://doi.org/10.1103/physrevlett.110.087201

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