Abstract

We uncover a remarkable quantum scattering phenomenon in two-dimensional Dirac material systems where the manifestations of both classically integrable and chaotic dynamics emerge simultaneously and are electrically controllable. The distinct relativistic quantum fingerprints associated with different electron spin states are due to a physical mechanism analogous to a chiroptical effect in the presence of degeneracy breaking. The phenomenon mimics a chimera state in classical complex dynamical systems but here in a relativistic quantum setting - henceforth the term "Dirac quantum chimera," associated with which are physical phenomena with potentially significant applications such as enhancement of spin polarization, unusual coexisting quasibound states for distinct spin configurations, and spin selective caustics. Experimental observations of these phenomena are possible through, e.g., optical realizations of ballistic Dirac fermion systems.

Original languageEnglish (US)
Article number124101
JournalPhysical Review Letters
Volume120
Issue number12
DOIs
StatePublished - Mar 23 2018

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electron optics
chaos
electron spin
dynamical systems
ballistics
alkalies
fermions
augmentation
polarization
configurations
scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chaos in Dirac Electron Optics : Emergence of a Relativistic Quantum Chimera. / Xu, Hong Ya; Wang, Guang Lei; Huang, Liang; Lai, Ying-Cheng.

In: Physical Review Letters, Vol. 120, No. 12, 124101, 23.03.2018.

Research output: Contribution to journalArticle

Xu, Hong Ya ; Wang, Guang Lei ; Huang, Liang ; Lai, Ying-Cheng. / Chaos in Dirac Electron Optics : Emergence of a Relativistic Quantum Chimera. In: Physical Review Letters. 2018 ; Vol. 120, No. 12.
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