Atomic-scale control of graphene magnetism by using hydrogen atoms

被引：561
|
作者：
Gonzalez-Herrero, Hector [1 ,2 ]
Gomez-Rodriguez, Jose M. [1 ,2 ,3 ]
Mallet, Pierre [4 ,5 ]
Moaied, Mohamed [1 ,6 ]
Jose Palacios, Juan [1 ,2 ,3 ]
Salgado, Carlos [1 ]
Ugeda, Miguel M. [7 ,8 ]
Veuillen, Jean-Yves [4 ,5 ]
Yndurain, Felix [1 ,2 ,3 ]
Brihuega, Ivan [1 ,2 ,3 ]
机构：
[1] Univ Autonoma Madrid, Dept Fis Mat Condensada, Cantoblanco, E-28049 Madrid, Spain
[2] Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain
[3] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain
[4] Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France
[5] CNRS, Inst NEEL, F-38042 Grenoble, France
[6] Zagazig Univ, Dept Phys, Fac Sci, Zagazig 44519, Egypt
[7] CIC NanoGUNE, Donostia San Sebastian 20018, Spain
[8] Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain
来源：
SCIENCE | 2016年 / 352卷 / 6284期
关键词：
GRAPHITE; DEFECTS; SURFACE; STATES; MODEL; EDGE;
D O I：
10.1126/science.aad8038
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Isolated hydrogen atoms absorbed on graphene are predicted to induce magnetic moments. Here we demonstrate that the adsorption of a single hydrogen atom on graphene induces a magnetic moment characterized by a similar to 20-millielectron volt spin-split state at the Fermi energy. Our scanning tunneling microscopy (STM) experiments, complemented by first-principles calculations, show that such a spin-polarized state is essentially localized on the carbon sublattice opposite to the one where the hydrogen atom is chemisorbed. This atomically modulated spin texture, which extends several nanometers away from the hydrogen atom, drives the direct coupling between the magnetic moments at unusually long distances. By using the STM tip to manipulate hydrogen atoms with atomic precision, it is possible to tailor the magnetism of selected graphene regions.
引用
收藏
页码：437 / 441
页数：5
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