Journal ArticleDOI
Visualizing nonlinear resonance in nanomechanical systems via single-electron tunneling
Xinhe Wang,Xinhe Wang,Cong Lin,Dong Zhu,Zi Yuan,Xiaoyang Lin,Weisheng Zhao,Zaiqiao Bai,Wenjie Liang,Ximing Sun,Guang-Wei Deng,Guang-Wei Deng,Kaili Jiang +12 more
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TLDR
In this paper, a gate-defined quantum dot is embedded into a mechanical resonator under strong actuation conditions, and the Coulomb peak positions synchronously oscillate with the mechanical vibrations, enabling a single-electron "chopper" mode.Abstract:
Numerous reports have elucidated the importance of mechanical resonators comprising quantum-dot-embedded carbon nanotubes (CNTs) for studying the effects of single-electron transport. However, there is a need to investigate the single-electron transport that drives a large amplitude into a nonlinear regime. Herein, a CNT hybrid device has been investigated, which comprises a gate-defined quantum dot that is embedded into a mechanical resonator under strong actuation conditions. The Coulomb peak positions synchronously oscillate with the mechanical vibrations, enabling a single-electron “chopper” mode. Conversely, the vibration amplitude of the CNT versus its frequency can be directly visualized via detecting the time-averaged single-electron tunneling current. To understand this phenomenon, a general formula is derived for this time-averaged single-electron tunneling current, which agrees well with the experimental results. By using this visualization method, a variety of nonlinear motions of a CNT mechanical oscillator have been directly recorded, such as Duffing nonlinearity, parametric resonance, and double-, fractional-, mixed- frequency excitations. This approach opens up burgeoning opportunities for investigating and understanding the nonlinear motion of a nanomechanical system and its interactions with electron transport in quantum regimes.read more
Citations
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A coherent nanomechanical oscillator driven by single-electron tunneling
TL;DR: In this article, a single-electron transistor embedded in a nanomechanical oscillator is shown to achieve coherent mechanical oscillations under conditions of strong coupling, and the resulting emission has the same coherence as a laser, and demonstrate other laser behaviour including injection locking and feedback narrowing of the emitted signal.
Journal ArticleDOI
Promising spin caloritronics and spin diode effects based on 1T-FeCl<sub>2</sub> nanotube devices
TL;DR: The spin filtering effect, negative differential resistance, spin Seebeck effect and spin diode effect are found in homogeneous and heterogeneous 1T-FeCl2 nanotubes, which suggest their potential applications in spintronic devices as discussed by the authors .
Journal ArticleDOI
Stable Universal 1‐ and 2‐Input Single‐Molecule Logic Gates
Ran Liu,Ying Mei Han,Feng Sun,Gyan Khatri,Jaesuk Kwon,Cameron Nickle,Lejia Wang,Chuan-Kui Wang,Damien Thompson,Zong-Liang Li,Christian A. Nijhuis,E. del Barco +11 more
TL;DR: In this article , a stable single-electron logic calculator (SELC) is presented, which allows real-time modulation of output current as a function of orthogonal input bias (Vb) and gate voltages.
Posted Content
Phase Diffusion in Single-Walled Carbon Nanotube Josephson Transistors
TL;DR: In this article, the authors investigated electronic transport in Josephson junctions formed by single-walled carbon nanotubes coupled to superconducting electrodes and observed enhanced zero-bias conductance (up to 10e^2/h) and pronounced subharmonic gap structures in differential conductance, which arise from the multiple Andreev reflections at superconductor/nanotube interfaces.
References
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Journal ArticleDOI
Theory of Coulomb-blockade oscillations in the conductance of a quantum dot
TL;DR: Les resultats analytiques explicites sont obtenus pour the periodicite, l'amplitude, the forme de the raie, et l'energie d'activation des oscillations de the conductance.
Journal ArticleDOI
Strong coupling between single-electron tunneling and nanomechanical motion.
Gary A. Steele,Andreas K. Hüttel,B. Witkamp,Menno Poot,H. B. Meerwaldt,Leo P. Kouwenhoven,H. S. J. van der Zant +6 more
TL;DR: A high-quality mechanical resonator made from a suspended carbon nanotubes driven into motion by applying a periodic radio frequency potential using a nearby antenna was studied, and it was discovered that a direct current through the nanotube spontaneously drives the mechanical resonators, exerting a force that is coherent with the high-frequency resonant mechanical motion.
Journal ArticleDOI
Coupling Mechanics to Charge Transport in Carbon Nanotube Mechanical Resonators
TL;DR: The mechanical oscillations of a suspended single-walled carbon nanotube that also acts as a single-electron transistor are investigated, and the coupling is strong enough to drive the oscillations in the nonlinear regime.
Journal ArticleDOI
Tuning nonlinearity, dynamic range, and frequency of nanomechanical resonators
TL;DR: In this article, an electrostatic mechanism for tuning the nonlinearity of nanomechanical resonators and increasing their dynamic range for sensor applications is explored, and a theoretical model is developed that qualitatively explains the experimental results and serves as a simple guide for design of tunable nano-chanical devices.
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