哑铃形中空纳米管中集体激发的曲率效应
Curvature effects on collective excitations in dumbbell-shaped hollow nanotubes
摘要：
研究了表面曲率对一维哑铃形中空纳米管Tomonaga-Luttinger液体态的影响。发现表面曲率沿轴向的周期性变化显著提高了TLL指数，这归因于作用于低能电子在曲面上运动的有效势场.目前的结果占一维金属花生状富勒烯聚合物的TLL性能的实验观察，其包络面被假定为一个哑铃形的空心管。
英文摘要：
We investigate surface-curvature induced alteration in the Tomonaga-Luttinger liquid (TLL) states of a one-dimensional (1D) deformed hollow nanotube with a dumbbell-shape. Periodic variation of the surface curvature along the axial direction is found to enhance the TLL exponent significantly, which is attributed to an effective potential field that acts low-energy electrons moving on the curved surface. The present results accounts for the experimental observation of the TLL properties of 1D metallic peanut-shaped fullerene polymers whose enveloping surface is assumed to be a dumbbell-shaped hollow tube.
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