Spin-Dependent Electron Scattering at Graphene Edges on Ni(111)

被引：33

作者：

Garcia-Lekue, A. ^{[1
,2
]}

Balashov, T. ^{[3
]}

Olle, M. ^{[3
]}

Ceballos, G. ^{[3
]}

Arnau, A. ^{[1
,4
,5
]}

Gambardella, P. ^{[3
,6
,7
]}

Sanchez-Portal, D. ^{[1
,4
]}

Mugarza, A. ^{[3
]}

机构：

[1] Donostia Int Phys Ctr DIPC, E-20018 San Sebastian, Spain

[2] Basque Fdn Sci, IKERBASQUE, E-48011 Bilbao, Spain

[3] Catalan Inst Nanosci & Nanotecnol ICN2, E-08193 Barcelona, Spain

[4] Ctr Mixto CSIC UPV, Ctr Fis Mat CFM MPC, E-20018 San Sebastian, Spain

[5] Fac Quim, Dpto Fis Mat UPV EHU, E-20018 San Sebastian, Spain

[6] Inst Catalana Recerca & Estudis Avancats ICREA, E-08193 Barcelona, Spain

[7] ETH, Dept Mat, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 06期

基金：

欧洲研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.112.066802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：5

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