Spin to Valley Polarized Transition in Graphene Bilayers at ν = 0 in High Magnetic Fields
SCIE
SCOPUS
- Title
- Spin to Valley Polarized Transition in Graphene Bilayers at ν = 0 in High Magnetic Fields
- Authors
- KIM, SEYOUNG
- Date Issued
- 2011-06-30
- Publisher
- American Physical Society
- Abstract
- We investigate the transverse electric field (E) dependence of the nu = 0 quantum Hall state (QHS) in dual-gated graphene bilayers in high magnetic fields. The longitudinal resistivity rho(xx) measured at nu = 0 shows an insulating behavior which is strongest in the vicinity of E = 0, as well as at large E fields. At a fixed perpendicular magnetic field (B), the nu = 0 QHS undergoes a transition as a function of the applied E, marked by a minimum, temperature-independent rho(xx). This observation is explained by a transition from a spin-polarized nu = 0 QHS at small E fields to a valley-(layer-) polarized nu = 0 QHS at large E fields. The E field value at which the transition occurs follows a linear dependence on B.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/103395
- DOI
- 10.1103/PhysRevLett.107.016803
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- Physical Review Letters, vol. 107, no. 1, page. 016803, 2011-06-30
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.