Asymmetric I/V characteristics in nonalternant carbon networks

Article Abstract:

Carbon rings of the azulene molecule have been studied to demonstrate that nonalternant systems have asymmetry in their I/V characteristics, electron and hole transport regimes. Azulene is a nonalternant molecule in which the electron-hole symmetry is missing. Carbon rings with an odd number of atoms also have a nonalternant nature which results in intrinsic charge separation. Electronic conduction between two reservoirs of state via a molecular wire is solved using the algorithm formulated by Mujica.

Analysis, Molecular structure, Molecules, Chemical bonds

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An intrinsic carbon nanotube heterojunction diode

Article Abstract:

The electronic properties of pairs of 'armchair' and 'zigzag' carbon nanotubes with linear junctions have been studied. The linear junctions are made up of a nonalterant band of 5- and 7-membered rings. The former are metallic while the latter are semimetallic but both have nonchiral configurations. It is predicted that charge transfer will occur in the metal-armchair-zigzag system. The electrostatic potential for any electron transferred through the system is asymmetric along the tube axis.

Thin films, Diodes, Semiconductor, Semiconductor diodes

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Interference-modulated conductance in a three-terminal nanotube system

Article Abstract:

A three-terminal carbon nanotube system has been used to investigate ballistic conductance. Results indicate that conductance between two terminals is controlled via the third terminal.

Australia, Japan, Carbon, Chemistry, Physical and theoretical, Physical chemistry

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