Electronic and Magnetic Properties of Quasifreestanding Graphene on Ni

被引：604

作者：

Varykhalov, A. ^{[1
]}

Sanchez-Barriga, J. ^{[1
]}

Shikin, A. M. ^{[2
]}

Biswas, C. ^{[1
]}

Vescovo, E. ^{[3
]}

Rybkin, A. ^{[2
]}

Marchenko, D. ^{[2
]}

Rader, O. ^{[1
]}

机构：

[1] BESSY, D-12489 Berlin, Germany

[2] St Petersburg State Univ, VA Fock Inst Phys, St Petersburg 198504, Russia

[3] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.101.157601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the purpose of recovering the intriguing electronic properties of freestanding graphene at a solid surface, graphene self-organized on a Au monolayer on Ni(111) is prepared and characterized by scanning tunneling microscopy. Angle-resolved photoemission reveals a gapless linear pi-band dispersion near (K) over bar as a fingerprint of strictly monolayer graphene and a Dirac crossing energy equal to the Fermi energy (E-F) within 25 meV meaning charge neutrality. Spin resolution shows a Rashba effect on the pi states with a large (similar to 13 meV) spin-orbit splitting up to E-F which is independent of k.

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页数：4

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