Exchange Coupling of Spin-Crossover Molecules to Ferromagnetic Co Islands
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- 作者：Saber Gueddida ; Manuel Gruber ; Toshio Miyamachi ; Eric Beaurepaire ; Wulf Wulfhekel ; Mebarek Alouani
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2016
- 出版时间：March 3, 2016
- 年：2016
- 卷：7
- 期：5
- 页码：900-904
- 全文大小：368K
- ISSN：1948-7185
文摘
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.