Analog of Fishtail Anomaly in Plastically Deformed Graphene

TL;DR

This paper predicts a fishtail-like magnetic response in plastically deformed graphene caused by dislocation-induced paramagnetism and the magnetoplastic effect, suggesting potential experimental observation of these phenomena.

Contribution

It introduces a novel model linking strain-induced pseudo-electric fields and dislocation effects to magnetic anomalies in graphene.

Findings

Dislocation-induced paramagnetic moment appears at zero magnetic field

Magnetization exhibits fishtail anomaly features

Model parameters suggest experimental feasibility

Abstract

By introducing a strain rate generated pseudo-electric field, we discuss a magnetic response of a plastically deformed graphene. Our results demonstrate the appearance of dislocation induced paramagnetic moment in a zero applied magnetic field. More interestingly, it is shown that in the presence of the magnetoplastic effect, the resulting magnetization exhibits typical features of the so-called fishtail anomaly (previously observed in superconductors). The estimates of the model parameters suggest quite an optimistic possibility to experimentally realize the predicted phenomena in plastically deformed graphene.