Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-volatile bistability effect based on electrically controlled phase
  transition in scaled magnetic semiconductor nanostructures   We explore the bistability effect in a dimensionally scaled semiconductor
nanostruncture consisting of a diluted magnetic semiconductor quantum dot (QD)
and a reservoir of itinerant holes separated by a barrier. The bistability
stems from the magnetic phase transition in the QD mediated by the changes in
the hole population. Our calculation shows that when properly designed, the
thermodynamic equilibrium of the scaled structure can be achieved at two
different configurations; i.e., the one with the QD in a ferromagnetic state
with a sufficient number of holes and the other with the depopulated QD in a
paramagnetic state. Subsequently, the parameter window suitable for this
bistability formation is discussed along with the the conditions for the
maximum robustness/non-volatility. To examine the issue of scaling, an
estimation of the bistabiity lifetime is made by considering the thermal
fluctuation in the QD hole population via the spontaneous transitions. A
numerical evaluation is carried out for a typical carrier-mediated magnetic
semiconductor (e.g., GaMnAs) as well as for a hypothetical case of high Curie
temperature for potential room temperature operation.

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The categories of this paper are: math
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: gr-qc