Superpersistent Currents in Dirac Fermion Systems
Abstract
The principal Objective of the project was to uncover, understand, and exploit persistent currents in 2D Dirac material systems and pertinent phenomena in the emerging field of relativistic quantum nonlinear dynamics and chaos. Systematic theories and methods were developed to analyze and characterize persistent currents in these systems and their unusual physical properties. The main accomplishments are the following: (1) a physical understanding of conductance stability in chaotic and integrable graphene quantum dots with random impurities, (2) the analysis of conductance fluctuations in chaotic bilayer graphene quantum dots, (3)the identification of reverse Stark effect, anomalous optical transitions, and spin control in topological insulator quantum dots, (4) the discovery of nonlinear dynamics induced anomalous Hall effect in topological insulators, (5) the finding that chaos can enhance spin polarization in graphene, (6) the articulation of a robust relativistic quantum two-level system, (7) the discovery and understanding of a number of novel and unusual phenomena associated with scattering of pesudospin-1 particles, (8) a proposal to resolve the paradox of breakdown of quantum-classical correspondence in optomechanics, (9) the detection of unusual level statistics in graphene billiards, (10) the unearthing of the phenomenon of superscattering of pseudospin-1 wave in a photonic lattice system, (11) the revelation of relativistic Zitterbewegung in non-Hermitian photonic systems, and (12) the elucidation of the robustness of persistent currents in two-dimensional Dirac systems in the presence of random disorders. In addition, the phenomenon of magnetic field induced flow reversal in a ferrofluidic Taylor-Couette system was uncovered, and the issues of multistability, chaos, and random signal generation in semiconductor super lattice systems were addressed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 06, 2017
- Accession Number
- AD1030296
Entities
People
- Ying-Cheng Lai
Organizations
- Arizona State University