Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spiral magnetism and chiral superconductivity in Kondo-Hubbard
  triangular lattice model   Building on the results of Ref. \cite{faye2018phase}, which identified an
antiferromagnetic and Kondo singlet phases on the Kondo-Hubbard square lattice,
we use the variational cluster approximation (VCA) to investigate the
competition between these phases on a two-dimensional triangular lattice with
$120^{o}$ spin orientation. In addition to the antiferromagnetic exchange
interaction $J_{\perp}$ between the localized (impurity) and conduction
(itinerant) electrons, our model includes the local repulsion $U$ of the
conduction electrons and the Heisenberg interaction $J_H$ between the
impurities. At half-filling, we obtain the quantum phase diagrams in both
planes $(J_{\perp}, U J_{\perp})$ and $(J_{\perp}, J_{H})$. We identify a
long-range, three-sublattice, spiral magnetic order which dominates the phase
diagrams for small $J_{\perp}$ and moderate $U$, while a Kondo singlet phase
becomes more stable at large $J_{\perp}$. The transition from the spiral
magnetic order to the Kondo singlet phase is a second-order phase transition.
In the $(J_{\perp}, J_{H})$ plane, we observe that the effect of $J_H$ is to
reduce the Kondo singlet phase, giving more room to the spiral magnetic order
phase. It also introduces some small magnetic oscillations of the spiral
magnetic order parameter. At finite doping and when spiral magnetism is
ignored, we find superconductivity with symmetry order parameter $d+id$, which
breaks time reversal symmetry. The superconducting order parameter has a dome
centered at around $5\%$ hole doping, and its amplitude decreases with
increasing $J_{\perp}$. We show that spiral magnetism can coexist with $d+id$
state and that superconductivity is suppressed, indicating that these two
phases are in competition.

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The categories of this paper are: q-bio
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin