中国物理B ›› 2005, Vol. 14 ›› Issue (10): 2090-2092.doi: 10.1088/1009-1963/14/10/027
孔文婕, 吕力, 张殿琳, 潘正伟
Kong Wen-Jie (孔文婕), Lü Li (吕力), Zhang Dian-Lin (张殿琳), Pan Zheng-Wei (潘正伟)
摘要: The $1/f$ noise in multiwalled carbon nanotubes bundles has been investigated between the frequency range of 0.1 to 30 Hz. At room temperature the noise spectrum is standard 1/f, and its level is proportional to the square of the bias voltage. With decreasing temperature the noise level also decreases. At 4.2 K the noise level follows a non-monotonic dependence against the bias voltage, showing a peak at a certain bias voltage, meanwhile its frequency dependence also deviates from the 1/f trend. This anomalous behaviour is discussed within the picture of environmental quantum fluctuation of charge transport in the samples.
中图分类号: (Nanotubes)