Chaos in Dirac Electron Optics: Emergence of a Relativistic Quantum Chimera

Hong Ya Xu, Guang Lei Wang, Liang Huang, Ying-Cheng Lai

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


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
Issue number12
StatePublished - Mar 23 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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