Shot Noise as a Probe of Spin-Polarized Transport through Single Atoms

被引：48

作者：

Burtzlaff, Andreas ^{[1
]}

Weismann, Alexander ^{[1
]}

Brandbyge, Mads ^{[2
]}

Berndt, Richard ^{[1
]}

机构：

[1] Univ Kiel, Inst Expt Angew Phys, D-24098 Kiel, Germany

[2] Tech Univ Denmark, NanoDTU, DTU Nanotech Dept Micro & Nanotechnol, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 01期

关键词：

QUANTUM-NOISE; CONDUCTORS; CONTACTS; SUPPRESSION; SCALE; SIZE;

D O I：

10.1103/PhysRevLett.114.016602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Single atoms on Au(111) surfaces have been contacted with the Au tip of a low temperature scanning tunneling microscope. The shot noise of the current through these contacts has been measured up to frequencies of 120 kHz and Fano factors have been determined to characterize the transport channels. The noise at Fe and Co atoms, the latter displaying a Kondo effect, indicates spin-polarized transport through a single channel. Transport calculations reproduce this observation.

引用

页数：5

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