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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.


Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1021/acs.jpclett.6b00172
ISSN: 1948-7185
KITopen ID: 1000053557
HGF-Programm 43.21.02; LK 01
Erschienen in Journal of Physical Chemistry Letters
Band 7
Heft 5
Seiten 900-904
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