TY - JOUR
T1 - Spin-dependent electron scattering at graphene edges on Ni(111)
AU - Garcia-Lekue, Aran
AU - Balashov, Timofey
AU - Ollé Soronellas, Marc
AU - Ceballos, Gustavo
AU - Arnau Pino, Andrés
AU - Gambardella, Pietro
AU - Sanchez-Portal, Daniel
AU - Mugarza, Aitor
PY - 2014
Y1 - 2014
N2 - We investigate the scattering of surface electrons by the edges of graphene islands grown on Ni(111). By combining local tunneling spectroscopy and ab initio electronic structure calculations we find that the hybridization between graphene and Ni states results in strongly reflecting graphene edges. Quantum interference patterns formed around the islands reveal a spin-dependent scattering of the Shockley bands of Ni, which we attribute to their distinct coupling to bulk states. Moreover, we find a strong dependence of the scattering amplitude on the atomic structure of the edges, depending on the orbital character and energy of the surface states.
AB - We investigate the scattering of surface electrons by the edges of graphene islands grown on Ni(111). By combining local tunneling spectroscopy and ab initio electronic structure calculations we find that the hybridization between graphene and Ni states results in strongly reflecting graphene edges. Quantum interference patterns formed around the islands reveal a spin-dependent scattering of the Shockley bands of Ni, which we attribute to their distinct coupling to bulk states. Moreover, we find a strong dependence of the scattering amplitude on the atomic structure of the edges, depending on the orbital character and energy of the surface states.
UR - https://www.scopus.com/pages/publications/84894496786
U2 - 10.1103/PhysRevLett.112.066802
DO - 10.1103/PhysRevLett.112.066802
M3 - Article
SN - 0031-9007
VL - 112
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
ER -