Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local Density of States in Superconductor-Ferromagnetic Hybrid Systems   In this Letter we discuss various properties of the local density of states
(DOS) for a superconductor-ferromagnet hybrid system. The DOS is modified at
small energies on both sides of the interface. Due to the interplay of
superconductivity and ferromagnetism, the local DOS depends on the spin
direction. The spin polarization effects extend over a long distance from the
interface both in the superconductor and in the ferromagnet. If the ferromagnet
is of finite lenght, the DOS shows a (spin dependent) gap.

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The categories of this paper are: plasm-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex
3
The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc