Fluctuation-induced currents in suspended graphene nanoribbons: Adiabatic quantum pumping approach
arXiv:2311.10560 · doi:10.1103/PhysRevB.108.245408
Abstract
Graphene nanoribbons (GNRs) are thin strips of graphene with unique properties due to their structure and nanometric dimensions. They stand out as basic components for the construction of different types of nanoelectromechanical systems (NEMS), including some very promising sensors and pumps. However, various phenomena, such as unintended mechanical vibrations, can induce undesired electrical currents in these devices. Here, we take a quantum mechanical approach to analyze how currents induced by fluctuations (either thermal or of some other kind) in suspended GNRs contribute to the electric current. In particular, we study the pumping current induced by the adiabatic variation of the Hamiltonian of the system when a transverse vibration (flexural mode) of a GNR suspended over a gate is excited. Our theoretical approach and results provide useful tools and rules of thumb to understand and control the charge current induced by fluctuations in GNR-based NEMS, which is important for their applications in nanoscale sensors, pumps, and energy harvesting devices.
References in corpus (36)
- Ultrahigh electron mobility in suspended graphene
- Intrinsic and Extrinsic Performance Limits of Graphene Devices on SiO2
- Shot Noise in Mesoscopic Conductors
- A tight-binding approach to uniaxial strain in graphene
- Kwant: a software package for quantum transport
- Temperature dependent transport in suspended graphene
- Performance of Monolayer Graphene Nanomechanical Resonators with Electrical Readout
- Scattering approach to parametric pumping
- Light-field driven currents in graphene
- Imaging mechanical vibrations in suspended graphene sheets
- Charge Transport in Disordered Graphene-Based Low Dimensional Materials
- Probing thermal expansion of graphene and modal dispersion at low-temperature using graphene NEMS resonators
- Dictionary between scattering matrix and Keldysh formalisms for quantum transport driven by time-periodic fields
- Graphene ribbons with suspended masses as transducers in ultra-small nanoelectromechanical accelerometers
- Scattering theory of current-induced forces in mesoscopic systems
- Current-induced forces in mesoscopic systems: a scattering matrix approach
- Gigahertz quantized charge pumping in graphene quantum dots
- Adiabatic pumping through interacting quantum dots
- Quantum pumping in graphene
- Electron pumping in graphene mechanical resonators
- Nonlinear Damping in Graphene Resonators
- Adiabatic pumping through a quantum dot with coulomb interactions: A perturbation expansion in the tunnel coupling
- Quantum pumping with adiabatically modulated barriers in graphene
- Single-parameter pumping in graphene
- Crucial role of decoherence for electronic transport in molecular wires: Polyaniline as a case study
- Enhancing single-parameter quantum charge pumping in carbon-based devices
- Noise through Quantum Pumps
- Quantum charge pumping in graphene-based devices: When lattice defects do help
- Fluctuation-induced current from freestanding graphene: toward nanoscale energy harvesting
- Adiabatic Thermal Radiation Pumps for Thermal Photonics
- Decoherence in current induced forces: Application to adiabatic quantum motors
- Zero-frequency noise in adiabatically driven, interacting quantum systems
- Nonequilibrium current-induced forces caused by quantum localization: Anderson Adiabatic Quantum Motors
- Role of coherence in quantum-dot-based nanomachines within the Coulomb blockade regime
- Geometric rectification for nanoscale vibrational energy harvesting
- Current-induced forces in single-resonance systems