Real space manifestations of coherent screening in atomic scale Kondo lattices.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
17 05 2019
17 05 2019
Historique:
received:
21
12
2018
accepted:
18
04
2019
entrez:
19
5
2019
pubmed:
19
5
2019
medline:
19
5
2019
Statut:
epublish
Résumé
The interaction among magnetic moments screened by conduction electrons drives quantum phase transitions between magnetically ordered and heavy-fermion ground states. Here, starting from isolated magnetic impurities in the Kondo regime, we investigate the formation of the finite size analogue of a heavy Fermi liquid. We build regularly-spaced chains of Co adatoms on a metallic surface by atomic manipulation. Scanning tunneling spectroscopy is used to obtain maps of the Kondo resonance intensity with sub-atomic resolution. For sufficiently small interatomic separation, the spatial distribution of Kondo screening does not coincide with the position of the adatoms. It also develops enhancements at both edges of the chains. Since we can rule out any other interaction between Kondo impurities, this is explained in terms of the indirect hybridization of the Kondo orbitals mediated by a coherent electron gas, the mechanism that causes the emergence of heavy quasiparticles in the thermodynamic limit.
Identifiants
pubmed: 31101815
doi: 10.1038/s41467-019-10103-5
pii: 10.1038/s41467-019-10103-5
pmc: PMC6525169
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Pagination
2211Subventions
Organisme : Ministerio de Economía y Competitividad (Ministry of Economy and Competitiveness)
ID : MAT2015-66888-C3-2-R
Pays : International
Organisme : Ministerio de Economía y Competitividad (Ministry of Economy and Competitiveness)
ID : FIS2015-64886-C4-3-P
Pays : International
Organisme : Ministerio de Economía y Competitividad (Ministry of Economy and Competitiveness)
ID : MAT2016-78293-C6-6-R
Pays : International
Organisme : Generalitat de Catalunya (Government of Catalonia)
ID : 2017SGR1506
Pays : International
Organisme : Gobierno de Aragón
ID : E13_17R
Pays : International
Commentaires et corrections
Type : ErratumIn
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