Polaronic memristor strongly coupled to electrodes

Abstract

Attractive electron correlations due to an electron-vibron interaction (EVI) can overcome the direct Coulomb repulsion of polarons in strongly deformable molecular quantum dots (MQDs). If it realizes, a switching appears in the I-V characteristics of the degenerate nonadiabatic molecular bridges weakly coupled to electrodes providing a route to ultrafast `memristors' (memory-resistors) as the basis for future oscillators, amplifers, and other important circuit elements. Here, we extend our theory of polaronic memristors to adiabatic MQDs strongly coupled to the leads and show that the degeneracy of MQD (or other multilevel energy structure) along with the polaron-polaron attraction is a necessary ingredient of its switching behavior in the strong-coupling regime as well.

6 figures, 3 figures

References in corpus (8)

• Molecular Transport Junctions: Vibrational Effects
• Vibrational sidebands and dissipative tunneling in molecular transistors
• Many Body Effects on the Transport Properties of Single-Molecule Devices
• Semiclassical analysis of the Nonequilibrium Local Polaron
• Non-linear response of molecular junctions: The polaron model revisited
• Spin-charge separation and simultaneous spin and charge Kondo effect
• Localized polarons and doorway vibrons in finite quantum structures
• Fast polaron switching in degenerate molecular quantum dots

Cited by in corpus (10)

• Memory effects in complex materials and nanoscale systems
• Multiple steady-states in nonequilibrium quantum systems with electron-phonon interactions
• Nonequilibrium quantum systems with electron-phonon interactions: Transient dynamics and approach to steady state
• Generalized projected dynamics for non-system observables of non-equilibrium quantum impurity models
• Many-body Green's function theory for electron-phonon interactions: the Kadanoff-Baym approach to spectral properties of the Holstein dimer
• Non-equilibrium transport through molecular junctions in the quantum regime
• Electron transport in nanoscale junctions with local anharmonic modes
• Intermolecular forces and correlations mediated by a phonon bath
• Bi-stability in single impurity Anderson model with strong electron-phonon interaction (polaron regime)
• Randomly Fluctuating Potential Controlled Multistable Resonant Tunneling Current through a Quantum Dot