局域态充电对1/f^α隧穿电流噪声谱的影响
The influence of localized states charging on 1/f^α tunneling current noise spectrum
摘要：
本文报道了低频隧穿电流噪声谱分量（1/f^α）的理论研究结果。单个杂质原子的局域态在低频隧穿电流噪声的形成中起着关键作用。发现传导电子与一个或两个带电局域态库仑相互作用的“开”和“关”导致低频隧穿电流噪声谱1/f^α的幂律奇异性。不同低频范围内的幂律指数取决于传导电子与不同带电杂质的库仑相互作用的相对大小。
英文摘要：
We report the results of theoretical investigations of low frequency tunneling current noise spectra component (1/f^α). Localized states of individual impurity atoms play the key role in low frequency tunneling current noise formation. It is found that switching "on" and "off" of Coulomb interaction of conduction electrons with one or two charged localized states results in power law singularity of low-frequency tunneling current noise spectrum 1/f^α. Power law exponent in different low frequency ranges depends on the relative values of Coulomb interaction of conduction electrons with different charged impurities.
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