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Exchange Coupling of Spin-Crossover Molecules to Ferromagnetic Co Islands

Gueddida, Saber; Gruber, Manuel; Miyamachi, Toshio; Beaurepaire, Eric; Wulfhekel, Wulf; Alouani, Mebarek

Abstract:
The properties of Fe(1,10-phenanthroline)(2)(NCS)(2) (Fe-phen) molecules deposited on Co/Cu(111) are studied with scanning tunneling microscopy (STM) operated in ultrahigh vacuum at low temperature (4 K) and ab initio calculations. Both the experimental and theoretical results are used to identify the high-spin (HS) state of Fe-phen. Additionally, the calculations reveal a strong spin-polarization of the density of states (DOS) and is validated experimentally using the spin sensitivity of spin-polarized STM. Finally, it is shown that the magnetic moment of the Fe-ion within HS Fe-phen is strongly magnetically coupled to the underlying magnetic Co through the NCS groups. These findings enable promising spintronic perspectives.



Originalveröffentlichung
DOI: 10.1021/acs.jpclett.6b00172
Scopus
Zitationen: 24
Web of Science
Zitationen: 23
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2016
Sprache Englisch
Identifikator ISSN: 1948-7185
KITopen-ID: 1000053557
HGF-Programm 43.21.02 (POF III, LK 01) Quantum Properties of Nanostructures
Erschienen in Journal of Physical Chemistry Letters
Verlag American Chemical Society (ACS)
Band 7
Heft 5
Seiten 900-904
Nachgewiesen in Scopus
Web of Science
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