Single-Molecule Sensing Using Carbon Nanotubes Decorated with Magnetic Clusters

被引：25

作者：

Zanolli, Zeila ^{[1
]}

Charlier, J. -C. ^{[2
]}

机构：

[1] Univ Liege, B-4000 Sart Tilman Par Liege, Belgium

[2] Catholic Univ Louvain, Inst Condensed Matter & Nanosci IMCN, B-1348 Louvain, Belgium

来源：

ACS NANO | 2012年 / 6卷 / 12期

关键词：

spin-polarized quantum transport; nanomagnetism; carbon nanotubes; magnetic nanoclusters; electronic structure; gas sensing; CHEMICAL SENSORS; NICKEL CLUSTERS; SPIN; SPINTRONICS; TRANSPORT; DEVICE;

D O I：

10.1021/nn304111a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

First-principles and nonequilibrium Green's function techniques are used to investigate magnetism and spin-polarized quantum transport in metallic carbon nanotubes (CNT) decorated with transition metal (Ni-13, Pt-13) magnetic nanoclusters (NC). For small cluster sizes, the strong CNT-NC interaction induces spin-polarization in the CNT. The adsorption of a benzene molecule is found to drastically modify the CNT-NC magnetization. Such a magnetization change should be large enough to be detected via magnetic-AFM or SQUID magnetometry, hence suggesting a novel approach for single-molecule gas detection.

引用

页码：10786 / 10791

页数：6

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