Driving-voltage-induced mechanical force oscillations in metal quantum point contacts

Details Driving-voltage-induced mechanical force oscillations in metal quantum point contacts Driving-voltage-induced mechanical force oscillations in metal quantum point contacts

1998-01-11

arxiv.org/abs/cond-mat/9801091v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.58.15827

We predict that the mesoscopic tensile force fluctuations in metal quantum point contacts (nanowires) arise as a result of finite electric voltage on the contact. They are due to reconfiguration of the electronic subsystem and are correlated with the nonlinearities of the current-voltage characteristics of the contact. The observation of the effect would directly confirm the recently suggested "free-electron" mechanism of mesoscopic force fluctuations observed in nanowires under deformation. The related magnetic susceptibility fluctuations and role of topology of the wire cross section are discussed as well

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