Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Doping effects on the valence bond solid of Li$_{2}$RuO$_{3}$ with Mn
  substitution   $Li_{2}RuO_{3}$ with a honeycomb structure undergoes a drastic transition
from a regular honeycomb lattice with the $C2/m$ space group to a valence bond
solid state of the $P2_{1}/m$ space group with an extremely strong dimerization
at 550 K. We synthesized $Li_{2}Ru_{1-x}Mn_{x}O_{3}$ with a full solid solution
and investigated doping effects on the valence bond solid state as a function
of Mn content. The valence bond solid state is found to be stable up to $x =
0.2$, based on our extensive experiments: structural studies, resistivity, and
magnetic susceptibility. On the other hand, the extended x-ray absorption fine
structure analyses show that the dimer local structure remains robust even
above $x = 0.2$ with a minimal effect on the dimer bond length. This indicates
that the locally-disordered dimer structure survives well into the Mn-rich
phase even though the thermodynamically stable average structure has the $C2/m$
space group. Our results prove that the dimer formation in $Li_{2}RuO_{3}$ is
predominantly a local phenomenon driven by the formation of orbitally-assisted
metal-metal bonds and that these dimers are relatively robust against
doping-induced disorder.

23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess