Luttinger liquid theory as a model of the gigahertz electrical properties of carbon nanotubes
Luttinger liquid theory as a model of the gigahertz electrical properties of carbon nanotubes
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DOI：
10.1109/tnano.2002.806823
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发表时间：
2002-09-01
影响因子：
2.4
通讯作者：
Burke, PJ
中科院分区：
文献类型：
--
作者：
Burke, PJ
我们提出了一种技术，直接激发Luttinger液体集体模式的碳纳米管在千兆赫频率。通过将纳米管建模为具有分布式动力学和磁感应以及分布式量子和静电电容的纳米传输线，我们计算了各种测量几何形状的复频率依赖阻抗。在纳米传输线上激发电压波相当于直接激发尚未观察到的一维等离子体激元，即卢廷格液体的低能激发。我们的技术已经应用于二维等离子体激元，应该工作良好的一维等离子体激元。必须生长100微米长的管以获得千兆赫共振频率。我们的技术不需要欧姆接触，电容接触也可以工作。我们的模型有潜在的太赫兹纳米管晶体管和RF nanospintronics的应用。
We present a technique to directly excite Luttinger liquid collective modes in carbon nanotubes at gigahertz frequencies. By modeling the nanotube as a nano-transmission line with distributed kinetic and magnetic inductance as well as distributed quantum and electrostatic capacitance, we calculate the complex frequency-dependent impedance for a variety of measurement geometries. Exciting voltage waves on the nano-transmission line is equivalent to directly exciting the yet-to-be observed one-dimensional plasmons, the low energy excitation of a Luttinger liquid. Our technique has already been applied to two-dimensional plasmons and should work well for one-dimensional plasmons. Tubes of length 100 microns must be grown for gigahertz resonance frequencies. Ohmic contact is not necessary with our technique; capacitive contacts can work. Our modeling has applications in potentially Terahertz nanotube transistors and RF nanospintronics.