Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancing Chaotic Behavior at room temperature in GaAs/(Al,Ga)As
  Superlattices   Previous theoretical and experimental work has put forward 50-period
semiconductor superlattices as fast, true random number generators at room
temperature. Their randomness stems from feedback between nonlinear electronic
dynamics and stochastic processes that are intrinsic to quantum transitions.
This work theoretically demonstrates that shorter superlattices with higher
potential barriers contain fully chaotic dynamics over several intervals of the
applied bias voltage compared to the 50-periods device which presented a much
weaker chaotic behavior. The chaos arises from deterministic dynamics, hence it
persists even in the absence of additional stochastic processes. Moreover, the
frequency of the chaotic current oscillations is higher for shorter
superlattices. These features should allow for faster and more robust
generation of true random numbers.

31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin