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On the quality of molecular-beam epitaxy grown and interfaces
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) AES spectrum obtained on a C-contaminated Fe surface (top) and a clean Fe surface (bottom) and corresponding RHEED patterns along the [11] azimuth of the square lattice of Fe. Additional streaks for the C-contaminated Fe surface corresponding to a reconstruction are observed. (b) Arbitrary adsorbed quantity as a function of exposure time for a C-contaminated Fe surface (open circles) and for a clean Fe surface (full squares).

Image of FIG. 2.
FIG. 2.

Left: XPS spectra performed at room temperature on (a) a -thick reference Fe layer, (b) bare Fe monolayer, and (c) same sample than (b) but covered with 2 ML of MgO. See text for details. Right: absorption and XMCD spectra performed at room temperature on at the Fe edges. Note that all Fe surfaces of these samples are initially free of C or O contamination.

Image of FIG. 3.
FIG. 3.

Bias variation of the TMR. Inset: typical TMR vs field loop measured at room temperature and for (a) a clean interface and (b) a interface. See text for details.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the quality of molecular-beam epitaxy grown Fe∕MgO and Co∕MgO(001) interfaces