Magnetic impurity effects in metallic carbon nanotubes: local non-Fermi liquid theory

Kikuo Harigaya

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Magnetic impurity effects in metallic carbon nanotubes: local non-Fermi liquid theory

机译：金属碳纳米管中的磁杂质效应：局部非费米液体理论

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Magnetic impurity effects on metallic carbon nanotubesare studied theoretically. The resolvent method for themultichannel Kondo effect is applied to the band structureof thek·pperturbation Hamiltonian in the limit of infinite onsite repulsion at the impurity site. We discussthe local non-Fermi liquid behaviour at temperatures below the Kondo temperatureTK. The density of statesof localized electrons has a singularity at about1/2,which gives rise to a pseudogap at the Kondo resonanceat low temperatures. The temperature dependence of the electronic resistivity is predicted to beT1/2, and theimaginary part of the dynamical susceptibilities is dependent on1/2. Possible experimental observations are discussed

机译：从理论上研究了磁杂质对金属碳纳米管的影响.将多通道近藤效应的解析方法应用于杂质位点无限现场排斥极限下的扰动哈密顿量能带结构。我们讨论了低于近藤温度TK的局部非费米液体行为。局域电子的态密度在大约||1/2，在低温下在近藤共振处产生伪间隙。电子电阻率的温度依赖性预测为T1/2，动态磁化率的虚部取决于||1/2. 讨论可能的实验观察结果

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《New journal of physics》 |2000年第1期|9-9|共页
作者
Kikuo Harigaya;
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Physical Science Division, Electrotechnical Laboratory, Umezono 1-1-4, Tsukuba 305-8568,Japan (corresponding address)andNational Institute of Materials and Chemical Research,Higashi 1-1, Tsukuba 305-8565, JapanandKanazawa Institute of Technology,Ohgigaok;

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Magnetic impurity effects in metallic carbon nanotubes: local non-Fermi liquid theory

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