Building Complex Kondo Impurities by Manipulating Entangled Spin Chains
Choi, Deung-Jang (Max Planck Institute for the Structure and Dynamics of Matter)
Robles, Roberto (Institut Català de Nanociència i Nanotecnologia)
Yan, Sichao (Max Planck Institute for the Structure and Dynamics of Matter)
Burgess, Jacob A. J. (Max Planck Institute for the Structure and Dynamics of Matter)
Rolf-Pissarczyk, Steffen (Max Planck Institute for the Structure and Dynamics of Matter)
Gauyacq, Jean-Pierre (Institut des Sciences Moléculaires d'Orsay (Paris, França))
Lorente Palacios, Nicolás (Centro de Física de Materiales (Sant Sebastià, País Basc))
Ternes, Markus (Max Planck Institute for Solid State Research)
Loth, Sebastian (Max Planck Institute for the Structure and Dynamics of Matter)

Data:	2017
Resum:	The creation of molecule-like structures in which magnetic atoms interact controllably is full of potential for the study of complex or strongly correlated systems. Here, we create spin chains in which a strongly correlated Kondo state emerges from magnetic coupling of transition-metal atoms. We build chains up to ten atoms in length by placing Fe and Mn atoms on a CuN surface with a scanning tunneling microscope. The atoms couple antiferromagnetically via superexchange interaction through the nitrogen atom network of the surface. The emergent Kondo resonance is spatially distributed along the chain. Its strength can be controlled by mixing atoms of different transition metal elements and manipulating their spatial distribution. We show that the Kondo screening of the full chain by the electrons of the nonmagnetic substrate depends on the interatomic entanglement of the spins in the chain, demonstrating the prerequisites to build and probe spatially extended strongly correlated nanostructures.
Ajuts:	Ministerio de Economía y Competitividad MAT2012-38318-C03-02 Ministerio de Economía y Competitividad SEV-2013-0295
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Entanglement ; Kondo effect ; Scanning tunneling microscopy ; Spin chains
Publicat a:	Nano letters, Vol. 17, Núm. 10 (November 2017) , p. 6203-6209, ISSN 1530-6992

DOI: 10.1021/acs.nanolett.7b02882

Post-print 15 p, 1.7 MB

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