Distortion blockade in classical nano-electromechanical resonator

Abstract

We consider a single electron transistor where the central island can oscillate. It has been shown that for weak coupling of the elastic and electric degrees of freedom the position of the island fluctuates with a small variation of the current through the device. In this paper we consider the strong coupling limit. We show that the system undergoes a static mechanical instability that is responsible for the opening of a gap in the current voltage characteristics even at the degeneracy point. We provide an analytical description of the transition point. We also discuss how the mechanical nature of the suppression of the current can be probed experimentally by a slow modulation of the gate voltage.

5 pages, 5 figures

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• Ultrasensitive Displacement Noise Measurement of Carbon Nanotube Mechanical Resonators
• Cooling and Self-Oscillation in a Nanotube Electro-Mechanical Resonator
• Probing the charge of a quantum dot with a nanomechanical resonator
• Proposal for a nanomechanical qubit
• Signatures of the Current Blockade Instability in Suspended Carbon Nanotubes
• Euler buckling instability and enhanced current blockade in suspended single-electron transistors
• Discontinuous Euler instability in nanoelectromechanical systems
• Cooling a vibrational mode coupled to a molecular single-electron transistor
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• Probing nonlinear mechanical effects through electronic currents: the case of a nanomechanical resonator acting as electronic transistor
• Electro-Mechanical Transition in Quantum dots
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• Large current noise in nanoelectromechanical systems close to continuous mechanical instabilities
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• Charge-vibration interaction effects in normal-superconductor quantum dots
• Transport properties of a superconducting single-electron transistor coupled to a nanomechanical oscillator
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• Non-linear dynamics of a driven nanomechanical single electron transistor
• Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots
• Strong vibration nonlinearity in semiconductor-based nanomechanical systems
• Sensitivity of the mixing current technique to detect nano-mechanical motion
• Transient dynamics of an adiabatic NEMS
• Electromechanical instability in vibrating quantum dots with effectively negative charging energy
• Cotunneling, current blockade, and backaction forces in nanobeams close to the Euler buckling instability
• Coulomb blockade for an oscillating tunnel junction
• The effect of elastic disorder on single electron transport through a buckled nanotube
• Detection of ultrafast oscillations in Superconducting Point-Contacts by means of Supercurrent Measurements
• Nanomechanical vibrational response from electrical mixing measurements