2002/06/17 by A. Tajic, Markus Kindermann, M. Kindermann +1
Physics and Astronomy · #Mechanical and Optical Resonators #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.66.241301
published as Phys.Rev.B 66, 241301(R) (2002) · 4 pages including 4 figures
arxiv created 2002/06/17 · openalex publication_date 2002/12/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Ballistic electrons flowing through a constriction can transfer momentum to the lattice and excite a vibration of a free-standing conductor. We show (both numerically and analytically) that the electromechanical noise power P does not vanish on the plateaus of quantized conductance --- in contrast to the current noise. The dependence of P on the constriction width can be oscillatory or stepwise, depending on the geometry. The stepwise increase amounts to an approximate quantization of momentum noise.