Proximity-Induced Spin Polarization of Graphene in Contact with Half-Metallic Manganite

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Seiji Sakai
  • Sayani Bhattacharya

  • Zakhar I. Popov
  • Pavel V. Avramov
  • Shiro Entani
  • Yuri Hasegawa
  • Yoichi Yamada
  • Hannu Huhtinen
  • Hiroshi Naramoto
  • Pavel B. Sorokin
  • Yasushi Yamauchi

Organisaatiot

  • University of Tsukuba
  • National University of Science and Technology "MISiS"
  • Kyungpook National University
  • National Institutes for Quantum and Radiological Science and Technology
  • University of Turku
  • Technological Institute of Superhard and Novel Carbon Materials
  • National Institute for Materials Science Tsukuba

Kuvaus

The role of proximity contact with magnetic oxides is of particular interest from the expectations of the induced spin polarization and weak interactions at the graphene/magnetic oxide interfaces, which would allow us to achieve efficient spin-polarized injection in graphene-based spintronic devices. A combined approach of topmost-surface-sensitive spectroscopy utilizing spin-polarized metastable He atoms and ab initio calculations provides us direct evidence for the magnetic proximity effect in the junctions of single-layer graphene and half-metallic manganite La0.7Sr0.3MnO3 (LSMO). It is successfully demonstrated that in the graphene/LSMO junctions a sizable spin polarization is induced at the Fermi level of graphene in parallel to the spin polarization direction of LSMO without giving rise to a significant modification in the π band structure.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut7532-7541
Sivumäärä10
JulkaisuACS Nano
Vuosikerta10
Numero8
TilaJulkaistu - 23 elokuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 7244170