Parameter dependence of high-frequency nonlinear oscillations and intrinsic chaos in short GaAs/(Al, Ga)As superlattices
Abstract
We explore the design parameter space of short (5–25 period), n-doped, Ga/(Al,Ga)As semiconductor superlattices (SSLs) in the sequential resonant tunneling regime. We consider SSLs at cool (77 K) and warm (295 K) temperatures, simulating the electronic response to variations in (a) the number of SSL periods, (b) the contact conductivity, and (c) the strength of disorder (aperiodicities). Our analysis shows that the chaotic dynamical phases exist on a number of sub-manifolds of codimension zero within the design parameter space. This result provides an encouraging guide towards the experimental observation of high-frequency intrinsic dynamical chaos in shorter SSLs.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 01, 2018
- Source ID
- 10.1063/1.4997477
Entities
People
- Bjorn Birnir
- Ian Jenkins
- Jonathan Essen
- Luis López Bonilla
- Manuel Carretero
- Miguel Ruiz-Garcia
Organizations
- Ministry of Economy, Industry and Competitiveness
- United States Army Research Laboratory
- Universidad Carlos III de Madrid
- University of Iceland