A diluted magnetic 4H-SiC has been prepared by implanting Fe ions into the substrate. Its Curie temperature reaches as high as 320K and its technology is compatible with current IC. Moreover, the process includes thre...A diluted magnetic 4H-SiC has been prepared by implanting Fe ions into the substrate. Its Curie temperature reaches as high as 320K and its technology is compatible with current IC. Moreover, the process includes three annealing steps,named HNH annealing in this paper. Each step during this annealing has been analyzed. Comparisons have been made with different Fe concentrations and experimental results demonstrate that when the concentration of Fe is 0. 051, the Curie temperature is the highest. According to measurements, some explanation of this phenomenon is given.展开更多
Electron spin-polarization modulation with a ferromagnetic strip of in-plane magnetization is analyzed in a hybrid ferromagnet/semiconductor filter device.The dependencies of electron spin-polarization on the strip’s...Electron spin-polarization modulation with a ferromagnetic strip of in-plane magnetization is analyzed in a hybrid ferromagnet/semiconductor filter device.The dependencies of electron spin-polarization on the strip’s magnetization strength,width and position have been systematically investigated.A novel magnetic control spin-polarization switch is proposed by inserting a ferromagnetic metal(FM)strip eccentric in relation to off the center of the spin filter,which produces the first energy level spin-polarization reversal.It is believed to be of significant importance for the realization of semiconductor spintronics multiple-value logic devices.展开更多
文摘A diluted magnetic 4H-SiC has been prepared by implanting Fe ions into the substrate. Its Curie temperature reaches as high as 320K and its technology is compatible with current IC. Moreover, the process includes three annealing steps,named HNH annealing in this paper. Each step during this annealing has been analyzed. Comparisons have been made with different Fe concentrations and experimental results demonstrate that when the concentration of Fe is 0. 051, the Curie temperature is the highest. According to measurements, some explanation of this phenomenon is given.
基金supported by the National Basic Research Program of China(Grant No.2013CB934003)the State Key Laboratory of Software Development Environment(Grant No.SKLSDE-2013ZX-28)
文摘Electron spin-polarization modulation with a ferromagnetic strip of in-plane magnetization is analyzed in a hybrid ferromagnet/semiconductor filter device.The dependencies of electron spin-polarization on the strip’s magnetization strength,width and position have been systematically investigated.A novel magnetic control spin-polarization switch is proposed by inserting a ferromagnetic metal(FM)strip eccentric in relation to off the center of the spin filter,which produces the first energy level spin-polarization reversal.It is believed to be of significant importance for the realization of semiconductor spintronics multiple-value logic devices.
