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Manipulating the Topological Interface by Molecular Adsorbates: Adsorption of Co-Phthalocyanine on Bi2Se3

 Topological insulators are a promising class of materials for applications in the field of spintronics. New perspectives in this field can arise from interfacing metal–organic molecules with the topological insulator spin-momentum locked surface states, which can be perturbed enhancing or suppressing spintronics-relevant properties such as spin coherence. 

M. Caputo et al., Nano Lett., 2016, 16 (6), 3409–3414 (2016), DOI: 10.1021/acs.nanolett.5b02635
Here we show results from an angle-resolved photemission spectroscopy (ARPES) and scanning tunnelling microscopy (STM) study of the prototypical cobalt phthalocyanine (CoPc)/Bi2Se3 interface. We demonstrate that that the hybrid interface can act on the topological protection of the surface and bury the Dirac cone below the first quintuple layer.
Keywords: ARPES; charge transfer; Dirac cone; phthalocyanine; surface states; Topological insulator

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M. Caputo et al.,  Nano Lett., 2016, 16 (6), pp 3409–3414 (2016), DOI: 10.1021/acs.nanolett.5b02635

Last Updated on Thursday, 26 January 2017 15:29