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Magnetism and excha...
Magnetism and exchange interaction of small rare-earth clusters; Tb as a representative
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- Peters, Lars (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands.
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- Ghosh, Saurabh (författare)
- Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA.
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- Sanyal, Biplab (författare)
- Uppsala universitet,Materialteori
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- van Dijk, Chris (författare)
- Univ Amsterdam, Vant Hoff Inst Mol Sci, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands.
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- Bowlan, John (författare)
- Max Planck Gesell, Fritz Haber Inst, Faradayweg 4-6, D-14195 Berlin, Germany.
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- de Heer, Walt (författare)
- Georgia Inst Technol, Sch Phys, 837 State Str, Atlanta, GA 30332 USA.
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- Delin, Anna (författare)
- Uppsala universitet,KTH,SeRC - Swedish e-Science Research Centre,Materialfysik, MF,Uppsala Universitet, Sweden,Materialteori,Royal Inst Technol KTH, Sch Informat & Commun Technol, Dept Mat & Nanophys, Electrum 229, SE-16440 Kista, Sweden.;KTH, SeRC, SE-10044 Stockholm, Sweden.
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- Di Marco, Igor (författare)
- Uppsala universitet,Materialteori
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- Eriksson, Olle (författare)
- Uppsala universitet,Materialteori
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- Katsnelson, Mikhail I. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands.;Ural Fed Univ, Dept Theoret Phys & Appl Math, Ekaterinburg 620002, Russia.
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- Johansson, Börje (författare)
- Uppsala universitet,Materialteori
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- Kirilyuk, Andrei (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands.
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Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525 AJ Nijmegen, Netherlands Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA. (creator_code:org_t)
- 2016-01-22
- 2016
- Engelska.
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Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 6
- Relaterad länk:
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https://doi.org/10.1...
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
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- Here we follow, both experimentally and theoretically, the development of magnetism in Tb clusters from the atomic limit, adding one atom at a time. The exchange interaction is, surprisingly, observed to drastically increase compared to that of bulk, and to exhibit irregular oscillations as a function of the interatomic distance. From electronic structure theory we find that the theoretical magnetic moments oscillate with cluster size in exact agreement with experimental data. Unlike the bulk, the oscillation is not caused by the RKKY mechanism. Instead, the inter-atomic exchange is shown to be driven by a competition between wave-function overlap of the 5d shell and the on-site exchange interaction, which leads to a competition between ferromagnetic double-exchange and antiferromagnetic super-exchange. This understanding opens up new ways to tune the magnetic properties of rare-earth based magnets with nano-sized building blocks.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Peters, Lars
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Ghosh, Saurabh
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Sanyal, Biplab
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van Dijk, Chris
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Bowlan, John
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de Heer, Walt
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visa fler...
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Delin, Anna
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Di Marco, Igor
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Eriksson, Olle
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Katsnelson, Mikh ...
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Johansson, Börje
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Kirilyuk, Andrei
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visa färre...
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