Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin correlated electronic state on the surface of a spin-orbit Mott
  system (Layered Iridates)   Novel phases of two dimensional electron systems resulting from new surface
or interface modified electronic structures have generated significant interest
in material science. We utilize photoemission spectroscopy to show that the
near-surface electronic structure of a bulk insulating iridate
Sr$_3$Ir$_2$O$_7$ lying near metal-Mott insulator transition exhibit weak
metallicity signified by finite electronic spectral weight at the Fermi level.
The surface electrons exhibit a unique spin structure resulting from an
interplay of spin-orbit, Coulomb interaction and surface quantum magnetism,
distinct from a topological insulator state. Our results suggest the
experimental realization of a novel quasi two dimensional interacting electron
surface ground state, opening the door for exotic quantum entanglement and
transport phenomena in iridate-based oxide devices.

32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat