Chemical and electronic properties of Fe/MgO/Ge heterostructures for spin electronics
Chemical and electronic properties of Fe/MgO/Ge heterostructures for spin electronics
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自旋电子学中 Fe/MgO/Ge 异质结构的化学和电子特性
DOI:
10.1088/1742-6596/292/1/012010
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
R. Bertacco
中科院分区:
文献类型:
--
作者:
D. Petti;M. Cantoni;C. Rinaldi;R. Bertacco
We report on the chemical and electronic properties of epitaxial Fe/MgO/Ge(001) heterostructures probed by X-ray Photoemission Spectroscopy. At variance with the Fe/MgO/Fe system, annealing at 570 K produces a sizable interdiffusion at the upper Fe/MgO interface, while at 470 K this process is inhibited. The XPS analysis of band alignment in heterostructures annealed at 470 K grown onto an intrinsic Ge substrate indicates that the Fermi level is placed at the center of the MgO gap and that the Schottky barrier height is 0.35±0.1 eV, thus indicating a partial depinning of the Fermi level.
DOI:
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发表时间:
2007
期刊:
影响因子:
--
作者:
和田詠史;伊藤満;谷山智康
通讯作者:
谷山智康