Artificial Brownian motors: Controlling transport on the nanoscale

P Hänggi, F Marchesoni - Reviews of Modern Physics, 2009 - APS
In systems possessing spatial or dynamical symmetry breaking, Brownian motion combined
with unbiased external input signals, deterministic and random alike, can assist directed …

Superconducting diode effect via conformal-mapped nanoholes

YY Lyu, J Jiang, YL Wang, ZL Xiao, S Dong… - Nature …, 2021 - nature.com
A superconducting diode is an electronic device that conducts supercurrent and exhibits
zero resistance primarily for one direction of applied current. Such a dissipationless diode is …

Skyrmion ratchet in funnel geometries

JCB Souza, NP Vizarim, CJO Reichhardt, C Reichhardt… - Physical Review B, 2021 - APS
Using a particle-based model, we simulate the behavior of a skyrmion under the influence of
asymmetric funnel geometries and ac driving at zero temperature. We specifically …

Engineering of superconductors and superconducting devices using artificial pinning sites

R Wördenweber - Physical sciences reviews, 2017 - degruyter.com
Vortex matter in superconducting films and devices is not only an interesting topic for basic
research but plays a substantial role in the applications of superconductivity in general. We …

Clogging, diode and collective effects of skyrmions in funnel geometries

JCB Souza, NP Vizarim, CJO Reichhardt… - New Journal of …, 2022 - iopscience.iop.org
Using a particle-based model, we examine the collective dynamics of skyrmions interacting
with a funnel potential under dc driving as the skyrmion density and relative strength of the …

Controlled skyrmion ratchet in linear protrusion defects

JCB Souza, NP Vizarim, CJO Reichhardt, C Reichhardt… - Physical Review B, 2024 - APS
Using atomistic simulations, we investigate the dynamical behavior of a single skyrmion
interacting with an asymmetric linear protrusion array under external ac driving. The linear …

Rectification currents in two-dimensional artificial channels

F Marchesoni, S Savel'ev - Physical Review E—Statistical, Nonlinear, and Soft …, 2009 - APS
Driven transport of noninteracting Brownian particles in two-dimensional asymmetric
channels is investigated by fully accounting for longitudinal and transverse diffusions. Bona …

Collective dynamics and defect generation for Wigner crystal ratchets

C Reichhardt, CJO Reichhardt - Physical Review B, 2023 - APS
We consider a two-dimensional Wigner crystal coupled to a quasi-one-dimensional
asymmetric potential under ac or dc driving. As a function of electron density, substrate …

Reversible ratchet effects for vortices in conformal pinning arrays

C Reichhardt, D Ray, CJO Reichhardt - Physical Review B, 2015 - APS
A conformal transformation of a uniform triangular pinning array produces a structure called
a conformal crystal which preserves the sixfold ordering of the original lattice but contains a …

Cyclic superconducting refrigerators using guided fluxon propagation

T Karmakar, É Jussiau, SK Manikandan… - Physical Review …, 2024 - APS
We propose cyclic refrigeration in solid state, employing a gas of magnetic field vortices in a
type-II superconductor—also known as fluxons—as the cooling agent. Refrigeration cycles …