期刊
NANO LETTERS
卷 8, 期 9, 页码 2900-2905出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl8017143
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资金
- National Science Foundation [DMR07-05941]
- Office of Science
- Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH 11231]
- KRF [KRF-2007-314-C00093]
- National Research Foundation of Korea [2007-314-C00093, 핵06A2801, CG031501] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Negative differential resistance (NDR) was recently observed in carbon nanotube junctions just before breaking and hypothesized to arise from the formation of monatomic carbon wires in the junction. Motivated by these results, a first-principles scattering-state approach, based on density functional theory, is used to study the transport properties of carbon chains covalently connecting metallic carbon nanotube leads at finite bias. The I-V characteristics of short carbon chains are predicted to exhibit even-odd behavior, and NDR is found for both even and odd chain junctions in our calculations.
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