Physical property measurement of coupled halfmetal nanoparticles by use of nanogap electrodes

利用扫描电子显微镜中的碳纳米管探针，制作了在纳米间隙电极之间嵌入一个或几个纳米颗粒的纳米粒子物理性质测量装置（MDNPP）。我们用磁铁矿纳米颗粒（MNP）测量了MDNPP的电学性能，发现该器件存在显着的大接触电阻。为了克服这一问题，我们利用射频磁控溅射的方法，成功地制造出了具有少量MNPs且接触电阻非常小的MDNPP。我们测量了MDNPP的电导和磁导性能，并提出了其输运机制。

By use of a carbon nanotube probe set in the scanning electron microscope, we produced the measurement device for nanoparticle physical properties(MDNPP) that one or a few nanoparticles were embedded between nanogap electrodes. We measured the electrical properties of the MDNPP with a magnetite nanoparticle(MNP) and it was found that there was significant large contact resistance regarding that device. To overcome that problem, by use of the RF magnetron sputtering method, we succeeded in producing the MDNPP with the few MNPs whose contact resistance was very small. We measured the electrical-and magneto-conduction properties of the MDNPP and proposed the transport mechanism of that.