Dynamical electron transport through a nanoelectromechanical wire in a magnetic field
Department of Physics, Soongsil University, Seoul, 156-743, Korea
2 Department of Physics, Chungnam National University, Daejeon, 305-764, Korea
Revised: 1 April 2010
Published online: 22 June 2010
We investigate dynamical transport properties of interacting electrons moving in a vibrating nanoelectromechanical wire in a magnetic field. We have built an exactly solvable model in which the electron-electron interaction is considered nonperturbatively and the electric current and mechanical vibration are treated fully quantum mechanically on an equal footing. We demonstrate our theory by calculating the admittance of a finite-size wire, which is influenced by the magnetic field strength, the electron-electron interaction, and the complex interplay between the mechanical and the electrical energy scales. Nontrivial features including sharp resonance peaks appear in the admittance, which may be experimentally observable.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010