Spontaneous Transverse Response and Amplified Switching in Superconductors with Honeycomb Pinning Arrays

TL;DR

This paper demonstrates a novel spontaneous transverse response and amplified switching in superconductors with honeycomb pinning arrays, driven by dynamical symmetry breaking, with potential applications in device technology.

Contribution

The study introduces a new dynamical phenomenon of spontaneous transverse response and switching in superconductors with honeycomb pinning arrays, supported by numerical simulations.

Findings

Spontaneous transverse response appears near certain magnetic filling fractions.

A strongly amplified transverse switching effect is observed with an additional ac current.

Transverse ac drive can control longitudinal velocity switching.

Abstract

Using numerical simulations, we show that a novel spontaneous transverse response can appear when a longitudinal drive is applied to type-II superconductors with honeycomb pinning arrays in a magnetic field near certain filling fractions. This response is generated by dynamical symmetry breaking that occurs at fields away from commensurability. We find a coherent strongly amplified transverse switching effect when an additional transverse ac current is applied. The transverse ac drive can also be used to control switching in the longitudinal velocity response. We discuss how these effects could be used to create new types of devices such as current effect transistors.