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Title: Contact-induced spin polarization of monolayer hexagonal boron nitride on Ni(111)

Hexagonal boron nitride (h-BN) is a promising barrier material for graphene spintronics. In this Letter, spin-polarized metastable de-excitation spectroscopy (SPMDS) is employed to study the spin-dependent electronic structure of monolayer h-BN/Ni(111). The extreme surface sensitivity of SPMDS enables us to elucidate a partial filling of the in-gap states of h-BN without any superposition of Ni 3d signals. The in-gap states are shown to have a considerable spin polarization parallel to the majority spin of Ni. The positive spin polarization is attributed to the π-d hybridization and the effective spin transfer to the nitrogen atoms at the h-BN/Ni(111) interface.
Authors:
; ; ; ;  [1] ;  [2] ; ;  [3] ;  [4] ;  [1] ;  [4] ;  [4]
  1. Advanced Science Research Center, Japan Atomic Energy, Agency 2-4 Shirakata-Shirane, Tokai, Naka, Ibaraki 319-1195 (Japan)
  2. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
  3. L.V. Kirensky Institute of Physics SB RAS, Academgorodok, Krasnoyarsk 660036 (Russian Federation)
  4. (Russian Federation)
Publication Date:
OSTI Identifier:
22283299
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; ATOMS; BORON NITRIDES; CRYSTAL STRUCTURE; DE-EXCITATION; ELECTRONIC STRUCTURE; GRAPHENE; INTERFACES; NICKEL; NITROGEN; SENSITIVITY; SPIN ORIENTATION; SURFACES