Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Minority-Spin Impurity Band in n-Type (In,Fe)As: A Materials Perspective
  for Ferromagnetic Semiconductors   Fully understanding the properties of n-type ferromagnetic semiconductors
(FMSs), complementary to the mainstream p-type ones, is a challenging goal in
semiconductor spintronics because ferromagnetism in n-type FMSs is
theoretically non-trivial. Soft-x-ray angle-resolved photoemission spectroscopy
(SX-ARPES) is a powerful approach to examine the mechanism of carrier-induced
ferromagnetism in FMSs. Here our SX-ARPES study on the prototypical n-type FMS
(In,Fe)As reveals the entire band structure including the Fe-3d impurity bands
(IBs) and the host InAs ones, and provides direct evidence for electron
occupation of the InAs-derived conduction band (CB). A minority-spin Fe-3d IB
is found to be located just below the conduction-band minimum (CBM). The IB is
formed by the hybridization of the unoccupied Fe-3d states with the occupied
CBM of InAs in a spin-dependent way, resulting in the large spin polarization
of CB. The band structure with the IB is varied with band filling, which cannot
be explained by the rigid-band picture, suggesting a unified picture for
realization of carrier-induced ferromagnetism in FMS materials.

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The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an