Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong effect of hydrogen order on magnetic Kitaev interactions in
  H$_3$LiIr$_2$O$_6$   Very recently a quantum liquid was reported to form in H$_3$LiIr$_2$O$_6$, an
iridate proposed to be a close realization of the Kitaev honeycomb model. To
test this assertion we perform detailed quantum chemistry calculations to
determine the magnetic interactions between Ir moments. We find that weakly
bond dependent ferromagnetic Kitaev exchange dominates over other couplings,
but still is substantially lower than in Na$_2$IrO$_3$. This reduction is
caused by the peculiar position of the inter-layer species: removing hydrogen
cations next to a Ir$_2$O$_2$ plaquette increases the Kitaev exchange by more
than a factor of three on the corresponding Ir-Ir link. Consequently any lack
of hydrogen order will have a drastic effect on the magnetic interactions and
strongly promote spin disordering.

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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: eess
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex