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Chinese Physics, 2005, Vol. 14(10): 2090-2092    DOI: 10.1088/1009-1963/14/10/027
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

The 1/f noise in multiwalled carbon nanotubes

Kong Wen-Jie (孔文婕), Lü Li (吕力), Zhang Dian-Lin (张殿琳), Pan Zheng-Wei (潘正伟)
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences, Beijing 100080, China
Abstract  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.
Keywords:  carbon nanotubes      1/f noise      environmental quantum fluctuation  
Received:  13 June 2005      Revised:  15 June 2005      Accepted manuscript online: 
PACS:  73.63.Fg (Nanotubes)  
  72.70.+m (Noise processes and phenomena)  
  05.40.Ca (Noise)  

Cite this article: 

Kong Wen-Jie (孔文婕), Lü Li (吕力), Zhang Dian-Lin (张殿琳), Pan Zheng-Wei (潘正伟) The 1/f noise in multiwalled carbon nanotubes 2005 Chinese Physics 14 2090

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