Magnetically hindered chain formation in transition-metal break junctions

Details Magnetically hindered chain formation in transition-metal break junctions Magnetically hindered chain formation in transition-metal break junctions

2009-11-19

arxiv.org/abs/0911.3768v1

Phys. Rev. Lett. 103, 217201 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.103.217201

Based on first-principles calculations, we demonstrate that magnetism impedes the formation of long chains in break junctions. We find a distinct softening of the binding energy of atomic chains due to the creation of magnetic moments that crucially reduces the probability of successful chain formation. Thereby, we are able to explain the long standing puzzle why most of the transition-metals do not assemble as long chains in break junctions and provide thus an indirect evidence that in general suspended atomic chains in transition-metal break junctions are magnetic.

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