Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconductivity in doped Dirac semimetals   We theoretically study intrinsic superconductivity in doped Dirac semimetals.
Dirac semimetals host bulk Dirac points, which are formed by doubly degenerate
bands, so the Hamiltonian is described by a $4 \times 4$ matrix and six types
of $k$-independent pair potentials are allowed by the Fermi-Dirac statistics.
We show that the unique spin-orbit coupling leads to characteristic
superconducting gap structures and $d$ vectors on the Fermi surface and the
electron-electron interaction between intra and interorbitals gives a novel
phase diagram of superconductivity. It is found that when the inter-orbital
attraction is dominant, an unconventional superconducting state with point
nodes appears. To verify the experimental signature of possible superconducting
states, we calculate the temperature dependence of bulk physical properties
such as electronic specific heat and spin susceptibility and surface state. In
the unconventional superconducting phase, either dispersive or flat Andreev
bound states appear between point nodes, which leads to double peaks or single
peak in the surface density of states, respectively. As a result, possible
superconducting states can be distinguished by combining bulk and surface
measurements.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn