Magnetoresistance of a bulk sample of FeSi

TL;DR

This study investigates the magnetoresistance behavior of bulk FeSi, revealing temperature-dependent transitions from chaotic to regular responses and highlighting the role of carrier mean free path in its magnetic properties.

Contribution

It provides new insights into the temperature and magnetic field dependence of FeSi's magnetoresistance, emphasizing the influence of carrier mean free path and negative components.

Findings

Magnetoresistance becomes regular above 6 K

Negative magnetoresistance linked to carrier mean free path

Approaches zero at high temperatures

Abstract

The magnetoresistance, MR of a well-characterized bulk FeSi sample was studied. It is shown that after a chaotic behavior at temperatures below 6 K, the magnetoresistance of FeSi becomes regular functions of temperature and magnetic field. The observations suggest that the mean free path of carriers defines along with the unknown negative component the negative values of magnetoresistance of FeSi then approaching zero values at high temperatures.