碳纳米管束中的单电子输运

Single-Electron Transport in Ropes of Carbon Nanotubes.

作者信息

Bockrath M, Cobden DH, McEuen PL, Chopra NG, Zettl A, Thess A, Smalley RE

机构信息

M. Bockrath, D. H. Cobden, P. L. McEuen, N. G. Chopra, A. Zettl, Molecular Design Institute, Lawrence Berkeley National Laboratory, and Department of Physics, University of California, Berkeley, CA 94720, USA. A. Thess and R. E. Smalley, Center for Nanoscale Science and Technology, Rice Quantum Institute, and Departments of Chemistry and Physics, Mail Stop 100, Rice University, Post Office Box 1892, Houston, TX 77251, USA.

出版信息

Science. 1997 Mar 28;275(5308):1922-5. doi: 10.1126/science.275.5308.1922.

DOI:10.1126/science.275.5308.1922

PMID:9072967

Abstract

The electrical properties of individual bundles, or "ropes," of single-walled carbon nanotubes have been measured. Below about 10 kelvin, the low-bias conductance was suppressed for voltages less than a few millivolts. In addition, dramatic peaks were observed in the conductance as a function of a gate voltage that modulated the number of electrons in the rope. These results are interpreted in terms of single-electron charging and resonant tunneling through the quantized energy levels of the nanotubes composing the rope.

摘要

单壁碳纳米管的单个管束（即“绳索”）的电学性质已被测量。在约10开尔文以下，对于小于几毫伏的电压，低偏置电导被抑制。此外，作为调制绳索中电子数量的栅极电压的函数，在电导中观察到急剧的峰值。这些结果是根据单电子充电以及通过构成绳索的纳米管的量子化能级的共振隧穿来解释的。