Magnetoasymmetric current fluctuations of single-electron tunneling
Magnetoasymmetric current fluctuations of single-electron tunneling
复制标题
单电子隧道效应的磁不对称电流涨落
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
D. Sánchez
中科院分区：
文献类型：
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作者：
D. Sánchez
我们确定了量子点在外加磁场反向作用下的散粒噪声不对称性。点耦合到边缘状态，当场反转时，边缘状态反转它们的手性，导致纳米结构中的磁不对称电化学势。令人惊讶的是，我们发现对应于非线性电导和散粒噪声的磁不对称性之间的精确关系，以领先的顺序在施加的偏压，这意味着一个更高阶的波动耗散关系。我们的计算还显示了转移电荷的全概率分布的磁不对称性。
We determine the shot-noise asymmetry of a quantum dot under reversal of an external magnetic field. The dot is coupled to edge states which invert their chirality when the field is reversed, leading to a magnetoasymmetric electrochemical potential in the nanostructure. Surprisingly, we find an exact relation between the magnetoasymmetries corresponding to the nonlinear conductance and the shot noise to leading order in the applied bias, implying a higher-order fluctuation-dissipation relationship. Our calculations also show a magnetoasymmetry of the full probability distribution of the transferred charge.