Strain engineering of magneto-optical properties in C3B/C3N van der Waals heterostructure

Po Hsin Shih, Thi Nga Do, Godfrey Gumbs

Research output: Contribution to journalArticlepeer-review

Abstract

Carbon-based bilayer van der Waals (vdW) materials are attracting much attention due to their predicted interesting physical properties. Here, we theoretically investigate electronic and optical properties of C3B/C3N vdW heterostructure (HTS) under external magnetic field and mechanical strain. The tight-binding model of the system is constructed to include the strain-induced modification of the hopping interactions. The influence of a uniform perpendicular magnetic field is included by using the Peierls substitution method. We observe the intriguing electronic and optical characteristics of the HTS under mechanical strain, covering the band inversion, alteration of band gap and optical gap, distortion of band-edge states, as well as significant enhancement of optical absorption. Furthermore, the interplay between external magnetic field and biaxial strain leads to exotic features of quantization and optical spectra. This work provides important information for the comprehension of the engineering of materials by external effects. Our study suggests that C3B/C3N vdW HTS is a promising candidate for next-generation electronic and optoelectronic devices.

Original languageEnglish
Article number118739
JournalCarbon
Volume218
DOIs
Publication statusPublished - 2024 Jan 31

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science

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