Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cooper Pair Writing at the LaAlO3/SrTiO3 Interface   The LaAlO3/SrTiO3 interface provides a unique platform for controlling the
electronic properties of the superconducting semiconductor SrTiO3. Prior
investigations have shown that two-dimensional superconductivity can be
produced at the LaAlO3/SrTiO3 interface and tuned electrostatically. The
recently demonstrated reversible control of the metal-insulator transition at
the same interface using conductive atomic force microscopy (c-AFM) raises the
question of whether this room-temperature technique can produce structures that
exhibit superconducting, normal metallic and insulating phases at sub-Kelvin
temperatures. Here we report low-temperature magnetotransport experiments on
conducting structures defined at an otherwise insulating LaAlO3/SrTiO3
interface. A quantum phase transition associated with the formation of Cooper
pairs is observed in these predefined structures at sub-Kelvin temperatures.
However, a finite resistance remains even at the lowest temperature. At higher
magnetic fields, interfaces with high mobility also exhibit strong Shubnikov-de
Haas oscillations as well as a larger Ginsburg-Landau coherence length. Cooper
pair localization, spin-orbit coupling, and finite-size effects may factor into
an explanation for some of the unusual properties observed.

23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn