Breakdown of the interlayer coherence in twisted bilayer graphene
SCIE
SCOPUS
- Title
- Breakdown of the interlayer coherence in twisted bilayer graphene
- Authors
- Youngwook Kim; Hoyeol Yun; Seung-Geol Nam; Minhyeok Son; Dong Su Lee; Dong Chul Kim; Seo, S; Choi, HC; Hu-Jong Lee; Sang Wook Lee; Jun Sung Kim
- Date Issued
- 2013-02-27
- Publisher
- American Physical Society
- Abstract
- Coherent motion of electrons in Bloch states is one of the fundamental concepts of charge conduction in solid-state physics. In layered materials, however, such a condition often breaks down for the interlayer conduction, when the interlayer coupling is significantly reduced by, e. g., a large interlayer separation. We report that complete suppression of coherent conduction is realized even in an atomic length scale of layer separation in twisted bilayer graphene. The interlayer resistivity of twisted bilayer graphene is much higher than the c-axis resistivity of Bernal-stacked graphite and exhibits strong dependence on temperature as well as on external electric fields. These results suggest that the graphene layers are significantly decoupled by rotation and incoherent conduction is a main transport channel between the layers of twisted bilayer graphene. DOI: 10.1103/PhysRevLett.110.096602
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15773
- DOI
- 10.1103/PHYSREVLETT.110.096602
- ISSN
- 0031-9007
- Article Type
- Article
- Citation
- Physical Review Letters, vol. 110, no. 9, page. 966021 - 66025, 2013-02-27
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.