Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resistance oscillations of two-dimensional electrons in crossed electric
  and tilted magnetic fields   Effect of dc electric field on transport of highly mobile 2D electrons is
studied in wide GaAs single quantum wells placed in titled magnetic fields. The
study shows that in perpendicular magnetic field resistance oscillates due to
electric field induced Landau-Zener transitions between quantum levels that
corresponds to geometric resonances between cyclotron orbits and periodic
modulation of electron density of states. Magnetic field tilt inverts these
oscillations. Surprisingly the strongest inverted oscillations are observed at
a tilt corresponding to nearly absent modulation of the electron density of
states in regime of magnetic breakdown of semiclassical electron orbits. This
phenomenon establishes an example of quantum resistance oscillations due to
Landau quantization, which occur in electron systems with a constant density of
states.

33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph