用散粒噪声测量碳纳米管中Luttinger参数

将碳纳米管的载流子输运用基本电荷为ge的Fermi液态模型描述，利用散射理论计算出纳米管中的零频率散粒噪声，在绝对零度下，存在一个强势垒的碳纳米管的散粒噪声为2geI.提出了一种测试纳米管Luttinger参数的新方法：在纳米管上形成一个强势垒，通过测试其散粒噪声，就可以计算出g因子. 关键词： 碳纳米管 Luttinger参数 散粒噪声 散射理论

Luttinger parameter of carbon nanotubes investigated by shot noise experiment

Fermi liquid model with elemental charge of e^*(e^*=ge) is used to describe the electrical transport in carbon nanotubes, so the scattering theory can be used to calculate the zero-frequency shot noise in nanotubes. When the temperature is 0K, the nanotube with a strong barrier has the shot noise of 2geI. A new approach to measure the Luttinger g-factor of nanotubes is created: forming a strong barrier in nanotube, measuring its shot noise S, and then calculating the g-factor.