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We predict that the mesoscopic tensile force fluctuations in metal quantumpoint contacts (nanowires) arise as a result of finite electric voltage on thecontact. They are due to reconfiguration of the electronic subsystem and arecorrelated with the nonlinearities of the current-voltage characteristics ofthe contact. The observation of the effect would directly confirm the recentlysuggested "free-electron" mechanism of mesoscopic force fluctuations observedin nanowires under deformation. The related magnetic susceptibilityfluctuations and role of topology of the wire cross section are discussed aswellComment: 5 pages, 3 figure

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