Observation of Negative Absolute Resistance in a Josephson Junction

Nagel, J.; Speer, David; Gaber, T.; Sterck, A.; Eichhorn, Ralf; Reimann, Peter; Ilin, K.; Siegel, M.; Koelle, D.; Kleiner, R.

doi:10.1103/physrevlett.100.217001

Cited by 99 publications

(70 citation statements)

References 28 publications

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“…͑6͒ occasionally exhibits the phenomenon of absolute negative mobility: The ac cycle-averaged drift velocity ͗ẋ ͘ may be oriented against the dc bias A 0 , as the result of a delicate interplay of chaotic and stochastic dynamics. This observation was corroborated theoretically by Speer et al ͑2007͒ andKostur et al ͑2008͒ and experimentally by Nagel et al ͑2008͒. Yet another artificial Brownian motor system where this phenomenon can likely be validated experimentally is a system of cold atoms dwelling in periodic optical lattices.…”

Section: Ac Drivesupporting

confidence: 65%

Artificial Brownian motors: Controlling transport on the nanoscale

2009

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In systems possessing spatial or dynamical symmetry breaking, Brownian motion combined with unbiased external input signals, deterministic and random alike, can assist directed motion of particles at submicron scales. In such cases, one speaks of "Brownian motors." In this review the constructive role of Brownian motion is exemplified for various physical and technological setups, which are inspired by the cellular molecular machinery: the working principles and characteristics of stylized devices are discussed to show how fluctuations, either thermal or extrinsic, can be used to control diffusive particle transport. Recent experimental demonstrations of this concept are surveyed with particular attention to transport in artificial, i.e., nonbiological, nanopores, lithographic tracks, and optical traps, where single-particle currents were first measured. Much emphasis is given to two-and three-dimensional devices containing many interacting particles of one or more species; for this class of artificial motors, noise rectification results also from the interplay of particle Brownian motion and geometric constraints. Recently, selective control and optimization of the transport of interacting colloidal particles and magnetic vortices have been successfully achieved, thus leading to the new generation of microfluidic and superconducting devices presented here. The field has recently been enriched with impressive experimental achievements in building artificial Brownian motor devices that even operate within the quantum domain by harvesting quantum Brownian motion. Sundry akin topics include activities aimed at noise-assisted shuttling other degrees of freedom such as charge, spin, or even heat and the assembly of chemical synthetic molecular motors. This review ends with a perspective for future pathways and potential new applications.

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Section: Ac Drivesupporting

confidence: 65%

Artificial Brownian motors: Controlling transport on the nanoscale

2009

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“…This phenomenon is similar to the anomalous negative mobility (current flows in the opposite direction to the applied constant force) that has been observed experimentally in semiconductor superlattices [30] and in Josephson junctions [31]. …”

Section: Discussionsupporting

confidence: 53%

Kink topology control by high-frequency external forces in nonlinear Klein-Gordon models

2014

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A method of averaging is applied to study the dynamics of a kink in the damped double sine-Gordon equation driven by both external (nonparametric) and parametric periodic forces at high frequencies. This theoretical approach leads to the study of a double sine-Gordon equation with an effective potential and an effective additive force. Direct numerical simulations show how the appearance of two connected π kinks and of an individual π kink can be controlled via the frequency. An anomalous negative mobility phenomenon is also predicted by theory and confirmed by simulations of the original equation.

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“…6-14͒. Recently, the NDR was theoretically predicted 15 and experimentally confirmed 16 in Josephson junctions.…”

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confidence: 94%

Negative differential resistance in molecular junctions: Effect of the electronic structure of the electrodes

Zimbovskaya

Pederson

2008

Phys. Rev. B

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We have carried out calculations of electron transport through a metal-molecule-metal junction with metal nanoclusters taking the part of electrodes. We show that negative differential resistance peaks could appear in the current-voltage curves. The peaks arise due to narrow features in the electron density of states of the metal clusters. The proposed analysis is based on the ab initio computations of the relevant wave functions and energies within the framework of the density-functional theory using NRLMOL software package.Electron transport through molecular-scale systems has been intensively studied in the past two decades. 1 Largely, the unceasing efforts of the research community to further advance these studies are due to important application potentials of single molecules as active elements in various nanodevices intended to complement current silicon-based electronics. 2 Among various important properties of the electron transport through metal-molecule junctions, one may separate out the negative differential resistance ͑NDR͒ that is the decrease in the current I while the bias voltage V across the molecule increases. The NDR effect was originally observed in tunneling semiconducting diodes. 3,4 Later, the NDR was viewed in quantum dots 5,6 and metal-moleculemetal junctions ͑see, e.g., Refs. 6-14͒. Recently, the NDR was theoretically predicted 15 and experimentally confirmed 16 in Josephson junctions.Several possible scenarios are proposed to explain the NDR occurrence in the electron transport through molecules. The NDR could appear if the conducting system includes weakly linked segments which have rather narrow and sharp features in the electron density of states. Then, as bias voltage V varies, the electron energy levels on these segments could move with respect to each other due to the electrostatic potential distribution across the whole system. At some values of the applied voltage the energy levels of the adjacent segments could be matching whereas at another values of V they mismatch. 11,17 One may expect the coupling between the segments to strengthen when the energy levels belonging to them match and weaken when the levels mismatch. This may noticeably modify the coupling of the molecule to the leads. The variations in the coupling strengths could serve as an immediate reason for the NDR peaks to appear. Also, such peaks could occur as a Coulomb blockade induced effect, 5,18 and/or they could originate from conformational changes in the molecule 19 and electron interaction with the molecule vibrational modes. 7,20 It is likely that different mechanisms could play a major part in the NDR appearance in different molecular junctions where it was observed so far. However, reviewing the available experimental data, one may conclude that the most distinguished NDR features in the current-voltage curves ͑sharp and narrow peaks separated by intervals of extremely low conductivity like those reported in Ref. 8͒ are usually attributed to the matching mismatching of the molecule energy levels with thos...

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Observation of Negative Absolute Resistance in a Josephson Junction

Cited by 99 publications

References 28 publications

Artificial Brownian motors: Controlling transport on the nanoscale

Artificial Brownian motors: Controlling transport on the nanoscale

Kink topology control by high-frequency external forces in nonlinear Klein-Gordon models

Negative differential resistance in molecular junctions: Effect of the electronic structure of the electrodes

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