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Menard, G. C., Guissart, S., Brun, C., Pons, S., Stolyarov, V. S., Debontridder, F., Leclerc, M. V., Janod, E., Cario, L., Roditchev, D., Simon, P. & Cren, T. (2015) Coherent long-range magnetic bound states in a superconductor. Nat. Phys. 11 1013–+. 
Added by: Laurent Cournède (2016-03-10 18:36:40)
Type de référence: Article
DOI: 10.1038/NPHYS3508
Numéro d'identification (ISBN etc.): 1745-2473
Clé BibTeX: Menard2015
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Catégories: PMN
Mots-clés: impurity, lead, nanoscale
Créateurs: Brun, Cario, Cren, Debontridder, Guissart, Janod, Leclerc, Menard, Pons, Roditchev, Simon, Stolyarov
Collection: Nat. Phys.
Consultations : 5/460
Indice de consultation : 1%
Indice de popularité : 0.25%
Résumé     
The quantum coupling of fully different degrees of freedom is a challenging path towards new functionalities for quantum electronics(1-3). Here we show that the localized classical spin of a magnetic atom immersed in a superconductor with a two-dimensional electronic band structure gives rise to a long-range coherent magnetic quantum state. We experimentally evidence coherent bound states with spatially oscillating particle-hole asymmetry extending tens of nanometres from individual iron atoms embedded in a 2H-NbSe2 crystal. We theoretically elucidate how reduced dimensionality enhances the spatial extent of these bound states and describe their energy and spatial structure. These spatially extended magnetic states could be used as building blocks for coupling coherently distant magnetic atoms in new topological superconducting phases(4-11).
Added by: Laurent Cournède  
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