We report measurements of the in-plane and interlayer magnetoresistances of FeSe. The in-plane magnetoresistance Δρab/ρab(0) for B∥c is positive below Ts and increases with decreasing temperature, exceeding 2.5 at T = 10 K and B = 14 T. The field-direction dependence indicates that the in-plane magnetoresistance is basically determined by the c-axis component of the magnetic field. The interlayer magnetoresistance Δρc/ρc(0) is negative below Ts but turns positive below ∼18 K, which is probably due to the contamination by the large in-plane magnetoresistance. The field-direction dependence of the interlayer magnetoresistance can approximately be described by a standard formula for quasi-two-dimensional electron systems except near B∥ab. The experimental magnetoresistance near B∥ab is larger than the formula, which can be attributed to the so-called interlayer coherence peak. The large width of the peak indicates the correspondingly large interlayer transfer energy.
@article{arxiv.2507.23255,
title = {In-plane and interlayer magnetoresistance in FeSe},
author = {Taichi Terashima and Shinya Uji and Hiroaki Ikeda and Yuji Matsuda and Takasada Shibauchi and Shigeru Kasahara},
journal= {arXiv preprint arXiv:2507.23255},
year = {2025}
}