Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron-Doped Sr2IrO4-delta (0 <= delta <= 0.04): Evolution of a
  Disordered Jeff = 1/2 Mott Insulator into an Exotic Metallic State   Stoichiometric Sr2IrO4 is a ferromagnetic Jeff = 1/2 Mott insulator driven by
strong spin-orbit coupling. Introduction of very dilute oxygen vacancies into
single-crystal Sr2IrO4-delta with delta < 0.04 leads to significant changes in
lattice parameters and an insulator-to-metal transition at TMI = 105 K. The
highly anisotropic electrical resistivity of the low-temperature metallic state
for delta ~ 0.04 exhibits anomalous properties characterized by non-Ohmic
behavior and an abrupt current-induced transition in the resistivity at T* = 52
K, which separates two regimes of resisitive switching in the nonlinear I-V
characteristics. The novel behavior illustrates an exotic ground state and
constitutes a new paradigm for devices structures in which electrical
resistivity is manipulated via low-level current densities ~ 10 mA/cm2
(compared to higher spin-torque currents ~ 107-108 A/cm2) or magnetic
inductions ~ 0.1-1.0 T.

36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs