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dc.contributor.authorSchendel, V
dc.contributor.authorBarreteau, C
dc.contributor.authorBrandbyge, M
dc.contributor.authorBorca, B
dc.contributor.authorPentegov, I
dc.contributor.authorSchlickum, U
dc.contributor.authorTernes, M
dc.contributor.authorWahl, Peter
dc.contributor.authorKern, K
dc.identifier.citationSchendel , V , Barreteau , C , Brandbyge , M , Borca , B , Pentegov , I , Schlickum , U , Ternes , M , Wahl , P & Kern , K 2017 , ' Strong paramagnon scattering in single atom Pd contacts ' , Physical Review. B, Condensed matter and materials physics , vol. 96 , no. 3 , 035155 .
dc.identifier.otherPURE: 250512645
dc.identifier.otherPURE UUID: df554b27-c0eb-408c-8f2f-fba108cb619d
dc.identifier.otherScopus: 85027355926
dc.identifier.otherORCID: /0000-0002-8635-1519/work/46939675
dc.identifier.otherWOS: 000406631500003
dc.description.abstractAmong all transition metals, palladium (Pd) has the highest density of states at the Fermi energy at low temperatures yet does not fulfill the Stoner criterion for ferromagnetism. However, its close vicinity to magnetism renders it a nearly ferromagnetic metal, which hosts paramagnons, strongly damped spin fluctuations. Here we compare the total and the differential conductance of mono-atomic contacts consisting of single Pd and Cobalt (Co) atoms between Pd electrodes. Transport measurements reveal a conductance for Co of 1\,G0, while for Pd we obtain 2\,G0. The differential conductance of mono-atomic Pd contacts shows a drop with increasing bias, which gives rise to a peculiar \Lambda-shaped spectrum. Supported by theoretical calculations we correlate this finding with the lifetime of hot quasi-particles in Pd which is strongly influenced by paramagnon scattering. In contrast to this, Co adatoms locally induce magnetic order and transport through single cobalt atoms remains unaffected by paramagnon scattering, consistent with theory.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights© 2017, American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectQC Physicsen
dc.subjectQD Chemistryen
dc.titleStrong paramagnon scattering in single atom Pd contactsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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