Steps and dips in the ac conductance and noise of mesoscopic structures
Steps and dips in the ac conductance and noise of mesoscopic structures
The frequency dependence of the equilibrium ac conductance (or the noise power spectrum) through a mesoscopic structure is shown to exhibit steps and dips. The steps, at energies related to the resonances of the structure, are closely related to the partial Friedel phases of these resonances, thus allowing a direct …