Quantum Effects in the Mechanical Properties of Suspended Nanomechanical Systems

Preprint

2 April 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0104039

Abstract

We explore the quantum aspects of an elastic bar supported at both ends and subject to compression. If strain rather than stress is held fixed, the system remains stable beyond the buckling instability, supporting two potential minima. The classical equilibrium transverse displacement is analogous to a Ginsburg-Landau order parameter, with strain playing the role of temperature. We calculate the quantum fluctuations about the classical value as a function of strain. Excitation energies and quantum fluctuation amplitudes are compared for silicon beams and carbon nanotubes.

Keywords

SUSPENDED NANOMECHANICAL
NANOMECHANICAL SYSTEMS
MECHANICAL PROPERTIES
QUANTUM FLUCTUATION
CARBON NANOTUBES
QUANTUM ASPECTS
QUANTUM EFFECTS
SILICON

All Related Versions

Version 1, 2001-04-02, ArXiv
Published version: Physical Review B, 64 (22), 220101.

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