Gyrotropic Zener tunneling and nonlinear IV curves in the zero-energy Landau level of graphene in a strong magnetic field

Loading...
Thumbnail Image
Access rights
openAccess
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-12-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-10
Series
Scientific Reports, Volume 8, issue 1
Abstract
We have investigated tunneling current through a suspended graphene Corbino disk in high magnetic fields at the Dirac point, i.e. at filling factor ν = 0. At the onset of the dielectric breakdown the current through the disk grows exponentially before ohmic behaviour, but in a manner distinct from thermal activation. We find that Zener tunneling between Landau sublevels dominates, facilitated by tilting of the source-drain bias potential. According to our analytic modelling, the Zener tunneling is strongly affected by the gyrotropic force (Lorentz force) due to the high magnetic field.
Description
| openaire: EC/H2020/670743/EU//QuDeT
Keywords
Other note
Citation
Laitinen , A , Kumar , M , Hakonen , P & Sonin , E 2018 , ' Gyrotropic Zener tunneling and nonlinear IV curves in the zero-energy Landau level of graphene in a strong magnetic field ' , Scientific Reports , vol. 8 , no. 1 , 594 , pp. 1-10 . https://doi.org/10.1038/s41598-017-18959-7