Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantised conductance of one-dimensional strongly-correlated electrons
  in an oxide heterostructure   Oxide heterostructures are versatile platforms with which to research and
create novel functional nanostructures. We successfully develop one-dimensional
(1D) quantum-wire devices using quantum point contacts on MgZnO/ZnO
heterostructures and observe ballistic electron transport with conductance
quantised in units of 2e^{2}/h. Using DC-bias and in-plane field measurements,
we find that the g-factor is enhanced to around 6.8, more than three times the
value in bulk ZnO. We show that the effective mass m^{*} increases as the
electron density decreases, resulting from the strong electron-electron
interactions. In this strongly interacting 1D system we study features matching
the 0.7 conductance anomalies up to the fifth subband. This paper demonstrates
that high-mobility oxide heterostructures such as this can provide good
alternatives to conventional III-V semiconductors in spintronics and quantum
computing as they do not have their unavoidable dephasing from nuclear spins.
This paves a way for the development of qubits benefiting from the low defects
of an undoped heterostructure together with the long spin lifetimes achievable
in silicon.

35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
1
The categories of this paper are: cs
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph