title: Electron transport through carbon nanotube intramolecular heterojunctions with peptide linkages.
abstract: We present a systematic analysis of electron transport characteristics of carbon nanotube (CNT) intramolecular heterojunctions with peptide linkages, MM, SS, SM1, and SM2 where M and S stand for metallic and semiconducting CNT electrodes, respectively. Our theoretical investigations show that the incorporation of peptide linkages and their associated dipole moments play an important role in determining the electron transport characteristics and lead to materials with unique properties, such as Schottky-like behavior. Furthermore, we show that the Schottky-like behavior is observed in our SM1 junction but not in the SM2 junction because of the different effects that arise from both the direction and strength of their dipole moments. We believe that our results will pave the way towards the design and implementation of various electronic logic functions based on carbon nanotubes for applications in the field of nanoelectronics.
authors: Institute for Materials Research, Tohoku University, Sendai, Japan. sulee@imr.edu
authors: Sang Uck
authors: SU
authors: Lee
authors: Mohammad
authors: M
authors: Khazaei
authors: Fabio
authors: F
authors: Pichierri
authors: Yoshiyuki
authors: Y
authors: Kawazoe
mesh_terms: D004579:Electron Transport; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D010455:Peptides