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

topological insulator; phtalocyanine; bismuth selenide; ARPES; charge transfer; Dirac cone; scanning tunneling microscopy; x-ray photoelectron spectroscopy; ultra high vacuum; surface science; nanotechnology; self-assembly

Abstract :

[en] 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. 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.

Disciplines :

Physics

Author, co-author :

Caputo, M.

PANIGHEL, Mirco ; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Barcelona 08193, Spain

Lisi, S.

Khalil, L.

Santo, G.D.

Papalazarou, E.

Hruban, A.

Konczykowski, M.

Krusin-Elbaum, L.

Aliev, Z.S.

More authors (13 more)

External co-authors :

yes

Language :

English

Title :

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

Publication date :

2016

Journal title :

Nano Letters

ISSN :

1530-6984

eISSN :

1530-6992

Volume :

Issue :

Pages :

3409 - 3414

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973664362&doi=10.1021%2facs.nanolett.5b02635&partnerID=40&md5=a8095418c987c03f6362c2d412cb9d41

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since 12 September 2024

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