Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules

Sebastian Jakobs, Awadhesh Narayan, Benjamin Stadtmüller, Andrea Droghetti, Ivan Rungger, Yew S. Hor, Svetlana Klyatskaya, Dominik Jungkenn, Johannes Stöckl, Martin Laux, Oliver L A Monti Masel, Martin Aeschlimann, Robert J. Cava, Mario Ruben, Stefan Mathias, Stefano Sanvito, Mirko Cinchetti

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We present a rational design approach to customize the spin texture of surface states of a topological insulator. This approach relies on the extreme multifunctionality of organic molecules that are used to functionalize the surface of the prototypical topological insulator (TI) Bi<inf>2</inf>Se<inf>3</inf>. For the rational design we use theoretical calculations to guide the choice and chemical synthesis of appropriate molecules that customize the spin texture of Bi<inf>2</inf>Se<inf>3</inf>. The theoretical predictions are then verified in angular-resolved photoemission experiments. We show that, by tuning the strength of molecule-TI interaction, the surface of the TI can be passivated, the Dirac point can energetically be shifted at will, and Rashba-split quantum-well interface states can be created. These tailored interface properties-passivation, spin-texture tuning, and creation of hybrid interface states-lay a solid foundation for interface-assisted molecular spintronics in spin-textured materials.

Original languageEnglish (US)
Pages (from-to)6022-6029
Number of pages8
JournalNano Letters
Volume15
Issue number9
DOIs
StatePublished - Sep 9 2015

Fingerprint

textures
Textures
Interface states
insulators
Molecules
Tuning
molecules
Magnetoelectronics
tuning
Surface states
Photoemission
Passivation
Semiconductor quantum wells
passivity
photoelectric emission
quantum wells
synthesis
predictions
Experiments
interactions

Keywords

  • hybrid organic/inorganic interfaces
  • organic molecules
  • spin texture
  • Topological insulators

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Jakobs, S., Narayan, A., Stadtmüller, B., Droghetti, A., Rungger, I., Hor, Y. S., ... Cinchetti, M. (2015). Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules. Nano Letters, 15(9), 6022-6029. https://doi.org/10.1021/acs.nanolett.5b02213

Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules. / Jakobs, Sebastian; Narayan, Awadhesh; Stadtmüller, Benjamin; Droghetti, Andrea; Rungger, Ivan; Hor, Yew S.; Klyatskaya, Svetlana; Jungkenn, Dominik; Stöckl, Johannes; Laux, Martin; Monti Masel, Oliver L A; Aeschlimann, Martin; Cava, Robert J.; Ruben, Mario; Mathias, Stefan; Sanvito, Stefano; Cinchetti, Mirko.

In: Nano Letters, Vol. 15, No. 9, 09.09.2015, p. 6022-6029.

Research output: Contribution to journalArticle

Jakobs, S, Narayan, A, Stadtmüller, B, Droghetti, A, Rungger, I, Hor, YS, Klyatskaya, S, Jungkenn, D, Stöckl, J, Laux, M, Monti Masel, OLA, Aeschlimann, M, Cava, RJ, Ruben, M, Mathias, S, Sanvito, S & Cinchetti, M 2015, 'Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules', Nano Letters, vol. 15, no. 9, pp. 6022-6029. https://doi.org/10.1021/acs.nanolett.5b02213
Jakobs S, Narayan A, Stadtmüller B, Droghetti A, Rungger I, Hor YS et al. Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules. Nano Letters. 2015 Sep 9;15(9):6022-6029. https://doi.org/10.1021/acs.nanolett.5b02213
Jakobs, Sebastian ; Narayan, Awadhesh ; Stadtmüller, Benjamin ; Droghetti, Andrea ; Rungger, Ivan ; Hor, Yew S. ; Klyatskaya, Svetlana ; Jungkenn, Dominik ; Stöckl, Johannes ; Laux, Martin ; Monti Masel, Oliver L A ; Aeschlimann, Martin ; Cava, Robert J. ; Ruben, Mario ; Mathias, Stefan ; Sanvito, Stefano ; Cinchetti, Mirko. / Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules. In: Nano Letters. 2015 ; Vol. 15, No. 9. pp. 6022-6029.
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