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

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• 作者：Marco Caputo ; Mirko Panighel ; Simone Lisi ; Lama Khalil ; Giovanni Di Santo ; Evangelos Papalazarou ; Andrzej Hruban ; Marcin Konczykowski ; Lia Krusin-Elbaum ; Ziya S. Aliev ; Mahammad B. Babanly ; Mikhail M. Otrokov ; Antonio Politano ; Evgueni V. Chulkov ; Andrés Arnau ; Vera Marinova ; Pranab K. Das ; Jun Fujii ; Ivana Vobornik ; Luca Perfetti ; Aitor Mugarza ; Andrea Goldoni ; Marino Marsi
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：June 8, 2016
• 年：2016
• 卷：16
• 期：6
• 页码：3409-3414
• 全文大小：471K
• 年卷期：0
• ISSN：1530-6992

文摘

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.