Superlattice of Single Atom Magnets on Graphene

被引：100

作者：

Baltic, Romana ^{[1
]}

Pivetta, Marina ^{[1
]}

Donati, Fabio ^{[1
]}

Wackerlin, Christian ^{[1
]}

Singha, Aparajita ^{[1
]}

Dreiser, Jan ^{[1
,2
]}

Rusponi, Stefano ^{[1
]}

Brune, Harald ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys, Stn 3, CH-1015 Lausanne, Switzerland

[2] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

来源：

NANO LETTERS | 2016年 / 16卷 / 12期

基金：

瑞士国家科学基金会;

关键词：

Single atom magnets; self-assembly; superlattice; rare earth atoms; graphene; XMCD; MOLECULE MAGNETS; LOW-TEMPERATURE; ANISOTROPY; MAGNETIZATION; SPIN; NANOMAGNETS; SYMMETRY;

D O I：

10.1021/acs.nanolett.6b03543

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Regular arrays of single atoms with stable magnetization represent the ultimate limit of ultrahigh density storage media. Here we report a self-assembled superlattice of individual and noninteracting Dy atoms on graphene grown on Ir(111), with magnetic hysteresis up to 5.6 T and spin lifetime of 1000 s at 2.5 K. The observed magnetic stability is a consequence of the intrinsic low electron and phonon densities of graphene and the 6-fold symmetry of the adsorption site. Our array of single atom magnets has a density of 115 Tbit/inch(2), defined by the periodicity of the graphene moire pattern.

引用

页码：7610 / 7615

页数：6

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