Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced quantum oscillatory magnetization and non-equilibrium currents
  in an interacting two-dimensional electron system in MgZnO/ZnO with repulsive
  scatterers   Torque magnetometry at low temperature and in high magnetic fields B is
performed on a MgZnO/ZnO heterostructure incorporating a high-mobility
two-dimensional electron system. We find a sawtooth-like quantum oscillatory
magnetization M(B), i.e., the de Haas-van Alphen (dHvA) effect. At the same
time, unexpected spike-like overshoots in M and non-equilibrium currents are
observed which allow us to identify the microscopic nature and density of the
residual disorder. The acceptor-like scatterers give rise to a magnetic thaw
down effect which enhances the dHvA amplitude beyond the electron-electron
interaction effects being present in the MgZnO/ZnO heterostructure

21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg