Magnetic Clusters in Molecular Beams, Metals, and Semiconductors
Magnetic Clusters in Molecular Beams, Metals, and Semiconductors
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DOI：
10.1126/science.271.5251.937
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发表时间：
1996-02
期刊：
影响因子：
56.9
通讯作者：
Jing Shi;S. Gider;K. Babcock;D. Awschalom
中科院分区：
文献类型：
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作者：
Jing Shi;S. Gider;K. Babcock;D. Awschalom
利用纳米尺度的团簇可以研究磁有序从微观到宏观的演化。各种新技术可以用来从原子水平上控制磁性团簇的大小。分子束被用来构建和测量孤立的金属团簇的磁性。嵌入金属中的超顺磁性金属颗粒在电导方面表现出显著的场依赖性变化，提供了自旋依赖性散射的测量。在半导体主机与离子注入的使用相关的努力已经产生了室温铁磁集群，可以直接通过磁力显微镜成像。
The evolution of magnetic order from the microscopic to the macroscopic regime may be studied with the use of nanometer-scale clusters. A variety of new techniques can be employed to control the size of the magnetic clusters from the atomic level. Molecular beams are used to construct and measure the magnetic properties of isolated metallic clusters. Superparamagnetic metallic particles embedded in a metal exhibit dramatic field-dependent changes in electrical conduction, providing a measure of spin-dependent scattering. Related efforts in semiconductor hosts with the use of ion implantation have generated room-temperature ferromagnetic clusters that can be directly imaged by magnetic force microscopy.