Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First-principles calculations of spin-triplet andreev reflection spectra
  at half-metallic ferromagnet/superconductor interface   Combining the first-principles noncollinear calculations of scattering
matrices with Andreev approximation, we investigated the spin-triplet Andreev
reflection (AR) spectra for the interface between half-metallic ferromagnet
Co$_{2}$MnSi and \emph{s}-wave BCS superconductor Al with and without
interfacial roughness, where the orientations of magnetic moments near the
interface are randomly distributed. The calculated results show that the AR
spectra have peak structures near zero bias for the clean interface with
relative weak magnetic disorder. With increasing the degree of interfacial
roughness or magnetic disorder, these subgap peaks of conductance spectra will
be washed out. The results also show that the value of subgap conductance
spectrum can be raised significantly by the magnetic disorder. Finally, our
calculations reveal that the long-range spin-triplet AR in Co$_{2}$MnSi/Al(001)
interface can be enhanced by a small amount of interfacial roughness.

17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol