Nonmonotonic band gap evolution in bent phosphorene nanosheets

Vojtěch Vlček*, Eran Rabani, Roi Baer, Daniel Neuhauser

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Nonmonotonic bending-induced changes of fundamental band gaps and quasiparticle energies are observed for realistic nanoscale phosphorene nanosheets. Calculations using stochastic many-body perturbation theory show that even slight curvature causes significant changes in the electronic properties. For small bending radii (<4 nm) the band gap changes from direct to indirect. The response of phosphorene to deformation is strongly anisotropic (different for zigzag vs armchair bending) due to an interplay of exchange and correlation effects. Overall, our results show that fundamental band gaps of phosphorene sheets can be manipulated by as much as 0.7 eV depending on the bending direction.

Original languageAmerican English
Article number064601
JournalPhysical Review Materials
Volume3
Issue number6
DOIs
StatePublished - 7 Jun 2019

Bibliographical note

Publisher Copyright:
© 2019 American Physical Society.

Fingerprint

Dive into the research topics of 'Nonmonotonic band gap evolution in bent phosphorene nanosheets'. Together they form a unique fingerprint.

Cite this