Aging in the transport on the corrugated ratchet potential

Abstract

Under rapid undercooling, glass forming liquids freeze in an amorphous state that can equilibrate only on enormously long time-scales, This is the characteristic sign of aging, which has been observed in a wide range of systems. Brownian ratchet is a widely studied system that exhibits many types of anomalous dynamical behavior. We have investigated the possibility of aging in the collective motion of Brownian particles in a periodic ratchet potential with quenched disorder. We find that when a slowly growing fraction of particles are trapped for long time, the collective movement tends to become super-diffusive. The super-diffusive transport weakly breaks the ergodicity and the time to cover the whole phase space become enormously long and reminiscent of aging behavior.

References in corpus (5)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Supercooled Liquids for Pedestrians
• Capturing of a Magnetic Skyrmion with a Hole
• Skyrmion ratchet propagation: Utilizing the skyrmion Hall effect in AC racetrack storage devices
• Skyrmion relaxation dynamics in the presence of quenched disorder