Nonnuclear nearly free electron conduction channels induced by doping charge in nanotube-molecular sheet composites
| Autor: | Jinlong Yang, Qijing Zheng, Hrvoje Petek, Jin Zhao |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Free electron model
Nanotube Condensed matter physics Fermi level Doping Carbon nanotube Electron transport chain law.invention Condensed Matter::Materials Science symbols.namesake chemistry.chemical_compound chemistry law Boron nitride Quantum mechanics symbols Vacuum level Physical and Theoretical Chemistry |
| Zdroj: | The journal of physical chemistry. A. 118(35) |
| ISSN: | 1520-5215 |
| Popis: | Nearly free electron (NFE) states with density maxima in nonnuclear (NN) voids may have remarkable electron transport properties ranging from suppressed electron–phonon interaction to Wigner crystallization. Such NFE states, however, usually exist near the vacuum level, which makes them unsuitable for transport. Through first principles calculations on nanocomposites consisting of carbon nanotube (CNT) arrays sandwiched between boron nitride (BN) sheets, we describe a stratagem for stabilizing the NN-NFE states to below the Fermi level. By doping the CNTs with negative charge, we establish Coulomb barriers at CNTs walls that, together with the insulating BN sheets, define the transverse potentials of one-dimensional (1D) transport channels, which support the NN-NFE states. |
| Databáze: | OpenAIRE |
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