Work

Electronic state back action on mechanical motion in a quantum point contact coupled to a nanomechanical resonator

Year: 2024

Type: article

Abstract: In a nanomechanical resonator coupled to a quantum point contact, the back action of the electronic state on mechanical motion is studied. The quantum point contact conductance changing with subband index and the eigenfrequency of the resonator are found to correlate. A model is constructed explaining the frequency deviations by the variable ability of the quantum point contact to screen the piezoelectric charge induced by mechanical oscillations. The observed effects can be used to develop electromechanical methods for studying the density of states in quasi-one-dimensional systems.

Source: Applied Physics Letters

DOI: 10.1063/5.0235485

Authors: Andrey A. Shevyrin, Askhat K. Bakarov, Alexander A. Shklyaev, Arthur G. Pogosov

Institutions: Institute of Semiconductor Physics, Novosibirsk State University

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Russian Science Foundation, Ministry of Science and Higher Education of the Russian Federation

Awards: G5431723522, G6181258508