TITLE

Multicarrier transport in epitaxial multilayer graphene

AUTHOR(S)
Yu-Ming Lin; Dimitrakopoulos, Christos; Farmer, Damon B.; Shu-Jen Han; Yanqing Wu; Wenjuan Zhu; Gaskill, D. Kurt; Tedesco, Joseph L.; Myers-Ward, Rachael L.; Eddy, Charles R.; Grill, Alfred; Avouris, Phaedon
PUB. DATE
September 2010
SOURCE
Applied Physics Letters;9/13/2010, Vol. 97 Issue 11, p112107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Variable-field Hall measurements were performed on epitaxial graphene grown on Si-face and C-face SiC. The carrier transport involves essentially a single-type of carrier in few-layer graphene, regardless of SiC face. However, in multilayer graphene (MLG) grown on C-face SiC, the Hall measurements indicated the existence of several groups of carriers with distinct mobilities. Electrical transport in MLG can be properly described by invoking three independent conduction channels in parallel. Two of these are n- and p-type, while the third involves nearly intrinsic graphene. The carriers in this lightly doped channel have significantly higher mobilities than the other two.
ACCESSION #
53768681

 

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