Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hybridization and anisotropy in the exchange interaction in 3D Dirac
  semimetals   We study the Ruderman-Kittel-Kasuya-Yosida interaction in 3D Dirac
semimetals. Using retarded Green's functions in real space, we obtain and
analyze asymptotic expressions for the interaction, with magnetic impurities at
different distances and relative angle with respect to high symmetry directions
on the lattice. We show that the Fermi velocity anisotropy in these materials
produces a strong renormalization of the magnitude of the interaction, as well
as a correction to the frequency of oscillation in real space. Hybridization of
the impurities to different conduction electron orbitals are shown to result in
interesting anisotropic spin-spin interactions which can generate spiral spin
structures in doped samples.

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The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin