Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Emergent topological and half semimetallic Dirac Fermions at oxide
  interfaces   It is highly desirable to combine recent advances in the topological quantum
phases with technologically relevant materials. Chromium dioxide (CrO2) is a
half-metallic material, widely used in high-end data storage applications.
Using first principles calculations, we show via interfacial orbital design
that a novel class of half semi-metallic Dirac electronic phase emerges at the
interface CrO2 with TiO2 in both thin film and superlattice configurations,
with four spin-polarized Dirac points in momentum-space (k-space) band
structure. When the spin and orbital degrees of freedom are allowed to couple,
the CrO2/TiO2 superlattice becomes a Chern insulator without external fields or
additional doping. With topological gaps equivalent to 43 Kelvin and a Chern
number 2, the ensuing quantization of Hall conductance to 2e^2/h will enable
potential development of these highly industrialized oxides for applications in
topologically high fidelity data storage and energy-efficient electronic and
spintronic devices.

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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat