Scanning Tunneling Microscopy Study of Ordered C60 Submonolayer Films on Co/Au(111)

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• 作者：Jobynson Kollamana ; Zheng Wei ; Martin Laux ; Johannes Stöckl ; Benjamin Stadtmüller ; Mirko Cinchetti ; Martin Aeschlimann
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：April 14, 2016
• 年：2016
• 卷：120
• 期：14
• 页码：7568-7574
• 全文大小：524K
• 年卷期：0
• ISSN：1932-7455

文摘

We demonstrate the successful preparation of ordered C₆₀ films on Co/Au(111) by scanning tunneling microscopy (STM). In particular, we show that the C₆₀ molecules arrange in a close-packed hexagonal pattern after postdeposition annealing at T = 350 °C. From STM measurements with intramolecular resolution we find domains with different orientational ordering, that is ultimately a result of the lateral arrangement of the C₆₀ molecules on the Co surface. The local ordering of the various domains is also clearly reflected in the measured differential conductance spectra. In particular, we find an energetic shift of the LUMO + 1 due to the reconstruction of the cobalt substrate. Our study opens the way for the introduction of ordered “spinterfaces” in molecular spintronics.