期刊
NANO LETTERS
卷 11, 期 2, 页码 343-347出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl102601m
关键词
Nanodot diode; nanoimprinting; ferromagnetic metal oxide; strongly correlated electron system; spin polarization
类别
资金
- Ministry of Education and Culture (MEXT) [21676001]
- Mazuda Foundation
- Research Foundation for the Electrotechnology of Chubu
- Mitutoyo Association for Science and Technology
- Grants-in-Aid for Scientific Research [21676001] Funding Source: KAKEN
Enhancement of spin polarization was observed in a transition metal oxide (Fe,Zn)(3)O-4/Nb-SrTiO3 ferromagnetic nanodot Schottky. The highly integrated oxide nanodot diodes were constructed using nanoimprint lithography based on a Mo lift-off method in combination with a pulsed laser deposition technique. The junction magnetoresistance of diodes increased as diode size increased. The spin polarization estimated from the thermionic emission model is enhanced from P = 0.74 in a conventional film to P = 0.89 in a nanodot diode whose size is 300 x 300 nm(2). The nanofabrication technique used here will enable us to construct superior transition metal oxide spintronic nanomaterial and nanodevices.
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