Observations of New Dirac Points in One-Dimensionally-Rippled Graphene on Hexagonal BN Using Scanning Tunneling Spectroscopy
- Authors
- Jang W.-J.[Jang W.-J.]; Lee M.W.[Lee M.W.]; Kim H.[Kim H.]; Park S.[Park S.]; Jung S.J.[Jung S.J.]; Lee S.[Lee S.]; Song Y.J.[Song Y.J.]; Kahng S.-J.[Kahng S.-J.]
- Issue Date
- 2015
- Citation
- Journal of Physical Chemistry C, v.119, no.33, pp.19535 - 19538
- Journal Title
- Journal of Physical Chemistry C
- Volume
- 119
- Number
- 33
- Start Page
- 19535
- End Page
- 19538
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/48692
- DOI
- 10.1021/acs.jpcc.5b05835
- Abstract
- Theories predicted that one-dimensional superlattice potentials in graphene would induce new Dirac points, instead of gap opening, due to lattice-induced chirality of charge carriers, but experimental evidence is rarely available in the literature. Here, we report observations of new Dirac points in one-dimensionally rippled graphene on hexagonal boron nitride (h-BN) using scanning tunneling microscopy and spectroscopy. The rippled graphene, formed due to thermal procedures, showed two new Dirac points above and below the Fermi level. The energy difference between a new Dirac point and the Fermi level was proportional to 1/L, where L was the period of a ripple, in agreement with theoretical predictions. Our study shows that the one-dimensional periodic potential is an accessible component for controlling the electronic properties of graphene. © 2015 American Chemical Society.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - SKKU Advanced Institute of Nano Technology > ETC > 1. Journal Articles
- Graduate School > SKKU Advanced Institute of Nano Technology > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/48692)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.