Research of 1/f Resistance Fluctuation

在本研究中，1/f电阻波动的碳纤维的条件下，碳纤维的张力是变化的测量。我们发现，施加的张力对电阻的平均值的影响是很小的，但1/f电阻波动的强度显着增加的张力的增加。实验结果表明：1/f电阻涨落的产生与晶格间的非线性相互作用有关;当施加张力时，晶格因塑性变形而变大，晶格间也会产生非线性相互作用。电子的散射概率S8 t）在宽的频率范围内示出了1/f^a（a = 1.2）PSD。S（t）的涨落具有与由白色噪声的1/2阶积分和模拟产生的1/f涨落相同的相关性质。这与碳阻波动的实验结果相一致。

In the present study, 1/f resistance fluctuations of the carbon fiber are measured under the condition that the tension of the carbon fiber is changes. We found the fact that the influence of the applied tension on the mean value of the resistance is very small, but the intensity of 1/f resistance fluctuations increases significantly by the increase of the tension. Our experimental results suggest that the origin of 1/f resistance fluctuation relates to nonlinear interaction among the lattices; when tension is applied, the size of the lattices become large by plastic deformation and the non-linear interaction among the lattices will also be caused.One-dimensional nonlinear atomic chain under periodic boundary condition was studied with by computer simulation. Scattering probability S8t) of the electron shows the 1/f^a (a〜1.2) PSD in a wide frequency range. The Fluctuation of the S(t) has the same correlation property as that of the 1/f fluctuation generated by 1/2-order integration of white noise and the simulation. The above fact was in agreement with the experimental result of carbon resister fluctuation.