On chain models for contact electrification

Javier E. Hasbun, Lok C. Lew Yan Voon, Morten Willatzen

Research output: Contribution to journalJournal articleResearchpeer-review


An exact analytical model of charge dynamics for a chain of atoms with asymmetric hopping terms is presented. Analytic and numeric results are shown to give rise to similar dynamics in both the absence and presence of electron interactions. The chain model is further extended to the case of two atoms per cell (a perfect alloy system). This extension is further applied to contact electrification between two different atomic chains and the effect of increasing the magnitude of the contact transfer matrix element is studied.
Original languageEnglish
JournalJournal of Physics: Condensed Matter
Number of pages24
Publication statusAccepted/In press - 2022


  • Atomic chain
  • Charge dynamics
  • Contact electrification
  • Tight-binding model


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