Accessibility of quantum effects in mesomechanical systems

被引：64

作者：

Carr, SM ^{[1
]}

Lawrence, WE ^{[1
]}

Wybourne, MN ^{[1
]}

机构：

[1] Dartmouth Coll, Dept Phys, Hanover, NH 03755 USA

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.64.220101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

共 14 条

[1] QUANTUM TUNNELLING IN A DISSIPATIVE SYSTEM [J].