Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Colossal Van der Waals small-polaron superlattice: a hint to
  understanding the colossal magnetoresistance and electroresistance in
  manganites   A mechanism is proposed to explain the formation of a small-polaron
superlattice above the Curie temperature in manganites. The order-disorder
transition initiated by the external field at a lattice is known responsible
for the colossal resistance effect. We attribute the lattice formation to the
occurrence of strong Van der Waals pairing of vibronic small polarons arising
from the phonon coupling of highly polarizable two-level orbital systems. The
latter having inherent electric and magnetic dipoles associated with them, they
couple to the external field leading to the observed colossal effects. We find
numerical estimates of the critical field compatible.

20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio