Transport in magnetically ordered Pt nanocontacts

Details Transport in magnetically ordered Pt nanocontacts Transport in magnetically ordered Pt nanocontacts

2005-10-06

arxiv.org/abs/cond-mat/0510153v1

Phys. Rev. B 72, 224418 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.72.224418

Pt nanocontacts, like those formed in mechanically controlled break junctions, are shown to develop spontaneous local magnetic order. Our density functional calculations predict that a robust local magnetic order exists in the atoms presenting low coordination, i. e., those forming the atom-sized neck. In contrast to previous work, we thus find that the electronic transport can be spin-polarized, although the net value of the conductance still agrees with available experimental information. Experimental implications of the formation of this new type of nanomagnet are discussed.

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