Abstract
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 thus provide indirect evidence that in general suspended atomic chains in transition-metal break junctions are magnetic.
- Received 30 June 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.217201
©2009 American Physical Society
Synopsis
When magnetism unchains a break junction
Published 16 November 2009
First-principles calculations explore how magnetic interactions impede the formation of atomically thin wires.
See more in Physics