An analytically solvable model of the effect of magnetic breakdown on angle-dependent magnetoresistance in a quasi-two-dimensional metal

TL;DR

This paper presents an analytical model for angle-dependent magnetoresistance oscillations in quasi-two-dimensional metals considering magnetic breakdown, enabling efficient simulation and comparison with experimental data.

Contribution

The paper introduces a comprehensive analytical model that accounts for magnetic breakdown and Bragg reflection in AMROs, improving understanding of field-dependent transitions in quasi-2D metals.

Findings

Model accurately simulates AMROs in organic metal kappa-ET2Cu(NCS)2

Describes transition from closed to breakdown-AMROs with increasing magnetic field

Enables efficient comparison with experimental magnetoresistance data

Abstract

We have developed an analytical model of angle-dependent magnetoresistance oscillations (AMROs) in a quasi-two-dimensional metal in which magnetic breakdown occurs. The model takes account of all the contributions from quasiparticles undergoing both magnetic breakdown and Bragg reflection at each junction and allows extremely efficient simulation of data which can be compared with recent experimental results on the organic metal kappa-ET2Cu(NCS)2. AMROs resulting from both closed and open orbits emerge naturally at low field, and the model enables the transition to breakdown-AMROs with increasing field to be described in detail.