Magnetic orderings in Al nanowires suspended between electrodes

Tomoya Ono; Shigeru Tsukamoto; Kikuji Hirose

doi:10.1063/1.1586459

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Magnetic orderings in Al nanowires suspended between electrodes

Tomoya Ono·Shigeru Tsukamoto·Kikuji Hirose

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Abstract

A theoretical analysis of a relation between atomic and spin-electronic structures for the ground state of single-row aluminum nanowires suspended between Al(001) electrodes is demonstrated using first-principles molecular-dynamics simulations. We obtain a unusual result that a 3-aluminum-atom nanowire sandwiched between the electrodes does not manifest magnetic ordering although an isolated aluminum trimer molecule in a straight line is spin-polarized. On the other hand, a 5-atom nanowire exhibits ferromagnetic ordering, where three central atoms form a spin-polarized trimer. Moreover, in the case of an 8-atom nanowire, the middle atoms in the nanowire form two spin-polarized trimers with antiferromagnetic ordering.

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Tomoya Ono, Shigeru Tsukamoto, Kikuji Hirose. 2003-04-02. Magnetic orderings in Al nanowires suspended between electrodes. https://doi.org/10.1063/1.1586459

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