Geometrical and orbital effects in a quasi-one dimensional conductor

TL;DR

This paper investigates how geometrical and orbital quantum interference effects influence the magnetoresistance of a quasi-one-dimensional conductor under pressure, revealing the interplay between structural parameters and electronic states.

Contribution

It provides a detailed analysis of geometrical and orbital effects in (Per)2[Au(mnt)2], distinguishing their roles in magnetoresistance behavior and comparing with Bechgaard salts.

Findings

Pressure suppresses the charge density wave state.

Orbital and geometrical effects are independently identified.

Magnetoresistance shows distinct geometrical and orbital quantum interference effects.

Abstract

The angular dependent magnetoresistance of (Per)2[Au(mnt)2] under pressure has revealed geometrical effects associated with the crystallographic parameters. Pressure suppresses the charge density wave ground state of the material, and in the metallic state both geometrical and orbital quantum interference effects appear. Through magnetic field dependence and orientation, the orbital and geometrical effects are independently identified. We compare the results from (Per)2[Au(mnt)2] with previous studies of the well-known Bechgaard salts.