Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical spin injection into Si(001) through a SiO2 tunnel barrier   We demonstrate spin polarized tunneling from Fe through a SiO2 tunnel barrier
into a Si n-i-p heterostructure. Transport measurements indicate that single
step tunneling is the dominant transport mechanism. The circular polarization,
Pcirc, of the electroluminescence (EL) shows that the tunneling spin
polarization reflects Fe majority spin. Pcirc tracks the Fe magnetization,
confirming that the spin-polarized electrons radiatively recombining in the Si
originate from the Fe. A rate equation analysis provides a lower bound of 30%
for the electron spin polarization in the Si at 5 K.

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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph