Mishchenko E G
Instituut-Lorentz, Universiteit Leiden, P.O. Box 9506, 2300 RA Leiden, The Netherlands.
Phys Rev Lett. 2000 Nov 6;85(19):4144-7. doi: 10.1103/PhysRevLett.85.4144.
It is shown that measurements of zero-frequency shot noise can provide information on electron-electron interaction, because the strong interaction results in the nonlinear voltage dependence of the shot noise in metallic wires. This is due to the fact that the Wiedemann-Franz law is no longer valid in the case of considerable electron-electron interaction. The deviations from this law increase the noise power and make it strongly dependent on the ratio of electron-electron and electron-impurity scattering rates.
结果表明，零频散粒噪声的测量可以提供有关电子-电子相互作用的信息，因为强相互作用会导致金属线中散粒噪声的非线性电压依赖性。这是由于在存在相当大的电子-电子相互作用的情况下，维德曼-夫兰兹定律不再成立。与该定律的偏差会增加噪声功率，并使其强烈依赖于电子-电子散射率与电子-杂质散射率之比。
