Electron scattering by Friedel oscillations in carbon nanotubes  

作　　者：Takumi Inaba Takahiro Morimoto Satoshi Yamazaki Toshiya Okazaki 

机构地区：[1]CNT-Application Research Center,National Institute of Advanced Industrial Science and Technology,Tsukuba 305-8565,Japan [2]Research Association of High-Throughput Design and Development for Advanced Functional Materials,Tsukuba 305-8565,Japan

出　　处：《Nano Research》2022年第2期889-897,共9页纳米研究（英文版）

摘　　要：Multi-walled carbon nanotube networks were confirmed to exhibit a linear decrease in resistivity with increasing temperature from 100 to above 400 K.The linearity was explained using a defect scattering model that involved Friedel oscillations(that is,electron-electron interactions).The applicability of this model,which was originally proposed for graphene,to carbon nanotubes was assessed based on a comparison of various experimental data.Increases in the slopes of the resistivity-temperature plots following the introduction of defects,as well as an effect of charge concentration on the slope were key predictions of this model.The results obtained from few-walled carbon nanotube networks are also shown.In the literature,linear resistivity-temperature plots were obtained from other graphene derivatives,indicating that the linearity originates from the hexagonal symmetry of these materials.The present work also indicated a relationship between the appearance of linearity and negative magnetoresistance above 100 K.Based on a mechanism incorporating scattering in association with Friedel oscillations and conventional electron conduction models,the universality of resistivity-temperature plots obtained from carbon nanotube networks is introduced.

关 键 词：carbon nanotube electron transport electron-electron interaction Friedel oscillations MAGNETORESISTANCE 

分 类 号：TB3[一般工业技术—材料科学与工程]