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Interlayer Coupling...
Interlayer Coupling of a Two-Dimensional Kondo Lattice with a Ferromagnetic Surface in the Antiferromagnet CeCo2P2
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- Poelchen, Georg (author)
- Dresden University of Technology,European Synchrotron Radiation Facility
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- Rusinov, Igor P. (author)
- Saint Petersburg State University,Tomsk State University
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- Schulz, Susanne (author)
- Dresden University of Technology
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- Güttler, Monika (author)
- Dresden University of Technology
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- Mende, Max (author)
- Dresden University of Technology
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- Generalov, Alexander (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Usachov, Dmitry Yu (author)
- Saint Petersburg State University
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- Danzenbächer, Steffen (author)
- Dresden University of Technology
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- Hellwig, Johannes (author)
- Goethe University
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- Peters, Marius (author)
- Goethe University
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- Kliemt, Kristin (author)
- Goethe University
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- Kucherenko, Yuri (author)
- G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine
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- Antonov, Victor N. (author)
- G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine
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- Laubschat, Clemens (author)
- Dresden University of Technology
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- Chulkov, Evgueni V. (author)
- CSIC Centro de Física de Materiales (UPV/EHU),Donostia International Physics Center (DIPC),Saint Petersburg State University,University of the Basque Country
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- Ernst, Arthur (author)
- Max Planck Institute of Microstructure Physics,Johannes-Kepler-University of Linz
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- Kummer, Kurt (author)
- European Synchrotron Radiation Facility
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- Krellner, Cornelius (author)
- Goethe University
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- Vyalikh, Denis V. (author)
- Basque Foundation for Science,Donostia International Physics Center (DIPC)
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(creator_code:org_t)
- 2022-02-14
- 2022
- English 9 s.
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In: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 16:3, s. 3573-3581
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http://dx.doi.org/10...
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Abstract
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- The f-driven temperature scales at the surfaces of strongly correlated materials have increasingly come into the focus of research efforts. Here, we unveil the emergence of a two-dimensional Ce Kondo lattice, which couples ferromagnetically to the ordered Co lattice below the P-terminated surface of the antiferromagnet CeCo2P2. In its bulk, Ce is passive and behaves tetravalently. However, because of symmetry breaking and an effective magnetic field caused by an uncompensated ferromagnetic Co layer, the Ce 4f states become partially occupied and spin-polarized near the surface. The momentum-resolved photoemission measurements indicate a strong admixture of the Ce 4f states to the itinerant bands near the Fermi level including surface states that are split by exchange interaction with Co. The temperature-dependent measurements reveal strong changes of the 4f intensity at the Fermi level in accordance with the Kondo scenario. Our findings show how rich and diverse the f-driven properties can be at the surface of materials without f-physics in the bulk.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- angle-resolved photoemission spectroscopy
- antiferromagnetic order
- CeCoP
- heavy fermion
- two-dimensional ferromagnetism
- two-dimensional Kondo lattice
Publication and Content Type
- art (subject category)
- ref (subject category)
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ACS Nano
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- By the author/editor
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Poelchen, Georg
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Rusinov, Igor P.
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Schulz, Susanne
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Güttler, Monika
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Mende, Max
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Generalov, Alexa ...
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show more...
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Usachov, Dmitry ...
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Danzenbächer, St ...
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Hellwig, Johanne ...
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Peters, Marius
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Kliemt, Kristin
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Kucherenko, Yuri
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Antonov, Victor ...
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Laubschat, Cleme ...
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Chulkov, Evgueni ...
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Ernst, Arthur
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Kummer, Kurt
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Krellner, Cornel ...
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Vyalikh, Denis V ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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ACS Nano
- By the university
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Lund University