Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bistability in a magnetic and nonmagnetic double-quantum-well structure
  mediated by the magnetic phase transition   The hole distribution in a double quantum well (QW) structure consisting of a
magnetic and a nonmagnetic semiconductor QW is investigated as a function of
temperature, the energy shift between the QWs, and other relevant parameters.
When the itinerant holes mediate the ferromagnetic ordering, it is shown that a
bistable state can be formed through hole redistribution, resulting in a
significant change in the properties of the constituting magnetic QW (i.e., the
paramagnetic-ferromagnetic transition). The model calculation also indicates a
large window in the system parameter space where the bistability is possible.
Hence, this structure could form the basis of a stable memory element that may
be scaled down to a few hole regime.

36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn