Magnetoresistance through a single nickel atom

被引:77
作者
Viret, M [1 ]
Berger, S
Gabureac, M
Ott, F
Olligs, D
Petej, I
Gregg, JF
Fermon, C
Francinet, G
Le Goff, G
机构
[1] CEA Orme Merisers, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[2] Clarendon Lab, Oxford, England
来源
PHYSICAL REVIEW B | 2002年 / 66卷 / 22期
关键词
D O I
10.1103/PhysRevB.66.220401
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The magnetoresistance (MR) of a nickel atomic contact has been measured using the break junction technique. When the contact is only between two atoms, the change of resistance with applied field reaches 40%. It is composed of a continuous bell-shaped curve on which discrete jumps are superimposed. The MR changes sign when the applied field is rotated, which we explain by a spin-orbit coupling change of orbital overlap between the Ni atoms forming the junction. Reproducible jumps in the MR curve are attributed to a field induced change of spin configuration within the few atoms composing the contact.
引用
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页码:1 / 4
页数:4
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