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arXiv 0903.0798cond-mat.mes-hallcond-mat.other
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变形双折射体Tomonaga-Luttinger指数的几何位移

Geometry-Driven Shift in the Tomonaga-Luttinger Exponent of Deformed Cylinders

Hiroyuki Shima, Hideo Yoshioka, Jun Onoe

摘要:

我们演示了几何微扰对长、薄、半径周期性变化的空心圆柱体中Tomonaga-Luttinger液体(TLL)态的影响。系统固有的表面曲率的变化引起单粒子态密度的幂律指数的显著增加。TLL指数的增加是由曲率诱导势引起的,该曲率诱导势将低能电子吸引到具有大曲率的区域。

英文摘要:

We demonstrate the effects of geometric perturbation on the Tomonaga-Luttinger liquid (TLL) states in a long, thin, hollow cylinder whose radius varies periodically. The variation in the surface curvature inherent to the system gives rise to a significant increase in the power-law exponent of the single-particle density of states. The increase in the TLL exponent is caused by a curvature-induced potential that attracts low-energy electrons to region that has large curvature.

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