Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancing Magnetic Ordering in Cr-doped Bi2Se3 using High-TC
  Ferrimagnetic Insulator   We report a study of enhancing the magnetic ordering in a model magnetically
doped topological insulator (TI), Bi2-xCrxSe3, via the proximity effect using a
high-TC ferrimagnetic insulator Y3Fe5O12. The FMI provides the TI with a source
of exchange interaction yet without removing the nontrivial surface state. By
performing the elemental specific X-ray magnetic circular dichroism (XMCD)
measurements, we have unequivocally observed an enhanced TC of 50 K in this
magnetically doped TI/FMI heterostructure. We have also found a larger (6.6 nm
at 30 K) but faster decreasing (by 80% from 30 K to 50 K) penetration depth
compared to that of diluted ferromagnetic semiconductors (DMSs), which could
indicate a novel mechanism for the interaction between FMIs and the nontrivial
TIs surface.

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The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph