4.6 Article

Accessibility of quantum effects in mesomechanical systems

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PHYSICAL REVIEW B
卷 64, 期 22, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.64.220101

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We consider the quantum properties of an elastic bar 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 and thermal fluctuations as a function of strain, Excitation energies and quantum fluctuation amplitudes are compared for silicon beams and carbon nanotubes.

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