Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lattice distortion in the spin-orbital entangled state in RVO3
  perovskites   We report a thorough study of Y$_{0.7}$La$_{0.3}$VO$_3$ single crystals by
measuring magnetic properties, specific heat, thermal conductivity, x-ray and
neutron diffraction with the motivation of revealing the lattice response to
the spin-orbital entanglement in \textit{R}VO$_3$. Upon cooling from room
temperature, the orbitally disordered paramagnetic state changes around
T*$\sim$220\,K to spin-orbital entangled state which is then followed by a
transition at T$_N$=116\,K to C-type orbital ordered (OO) and G-type
antiferromagnetic ordered (AF) ground state. In the temperature interval
T$_N<T<T^*$, the VO$_{6/2}$ octahedra have two comparable in-plane V-O bonds
which are longer than the out-of-plane V-O1 bond. This local structural
distortion supports the spin-orbital entanglement of partially filled and
degenerate yz/zx orbitals. However, this distortion is incompatible with the
steric octahedral site distortion intrinsic to orthorhombic perovskites. Their
competition induces a second order transition from the spin-orbital entangled
state to C-OO/G-AF ground state where the long range OO suppresses the
spin-orbital entanglement. Our analysis suggests that the spin-orbital
entangled state and G-OO are comparable in energy and compete with each other.
Rare earth site disorder favors the spin-orbital entanglement rather than a
cooperative Jahn-Teller distortion. The results also indicate for LaVO$_3$ a
C-OO/G-AF state in T$_t$\,$\leq$\,T\,$\leq$T$_N$ and an orbital flipping
transition at T$_t$.

33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th