“Flatlands” in spintronics: Controlling magnetism by magnetic proximity effect

I. Vobornik, J. Fujii, G. Panaccione, M. Unnikrishnan, Y. S. Hor, R. J. Cava

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Carbon atoms in graphene gain magnetic moments when in contact with magnetic substrates, following the macroscopic substrate alignment even at ambient temperature (Weser, M. et al.: Appl. Phys. Lett. 96, 012504 (2010)). On the other hand, magnetically doped topological insulators are ferromagnetic only at low temperatures (Tc = 13K in Bi2‒x Mnx Te3) (Hor, Y.S. et al.: Phys. Rev. B 81(81), 195203 (2010)). Here we report chemical selective polarization dependent X-ray experiments on Fe/Bi2‒xMnx Te3 interfaces, where we followed the temperature dependence of the magnetic properties of Mn doped topological insulator in proximity with magnetic iron film. We find the presence of robust long range ferromagnetism in Mn induced by the magnetic proximity effect and maintained up to the room temperature (Vobornik, I. et al.: Nano. Lett. 11(10), 4079 (2011)). These results trace path to interface-controlled ferromagnetism in novel (graphene and topological insulators) “flatlands”.

Original languageEnglish (US)
Title of host publicationCarbon Nanostructures
PublisherSpringer International Publishing
Pages215-219
Number of pages5
Edition9783642206436
DOIs
StatePublished - Jan 1 2012

Publication series

NameCarbon Nanostructures
Number9783642206436
ISSN (Print)2191-3005
ISSN (Electronic)2191-3013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science (miscellaneous)
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Materials Chemistry

Keywords

  • Core spin
  • Dichroic signal
  • Magnetic substrate
  • Quantum hall effect
  • Topological insulator

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    Vobornik, I., Fujii, J., Panaccione, G., Unnikrishnan, M., Hor, Y. S., & Cava, R. J. (2012). “Flatlands” in spintronics: Controlling magnetism by magnetic proximity effect. In Carbon Nanostructures (9783642206436 ed., pp. 215-219). (Carbon Nanostructures; No. 9783642206436). Springer International Publishing. https://doi.org/10.1007/978-3-642-20644-3_27