Single-particle and Interaction Effects on the Cohesion and Transport and Magnetic Properties of Metal Nanowires at Finite Voltages

TL;DR

This paper investigates how single-particle and electron-electron interaction effects influence the cohesion, electronic transport, and magnetic properties of metallic nanowires under finite voltages, highlighting the dominant role of single-particle effects in cohesion.

Contribution

It introduces a generalized mean-field electron model with self-consistent Hartree approximation to analyze these effects at finite voltages, emphasizing the distinct roles of single-particle and interaction effects.

Findings

Single-particle effects dominate cohesive force.

Interaction effects influence magnetoconductance and magnetotension.

Both effects significantly impact differential conductance and magnetic susceptibility.

Abstract

The single-particle and interaction effects on the cohesion, electronic transport, and some magnetic properties of metallic nanocylinders have been studied at finite voltages by using a generalized mean-field electron model. The electron-electron interactions are treated in the self-consistent Hartree approximation. Our results show the single-particle effect is dominant in the cohesive force, while the nonzero magnetoconductance and magnetotension coefficients are attributed to the interaction effect. Both single-particle and interaction effects are important to the differential conductance and magnetic susceptibility.