The magnetic ground state properties of non-centrosymmetric CePt$_3$B$_{1-x}$Si$_x$

TL;DR

This study investigates the magnetic ground states of CePt$_3$B$_{1-x}$Si$_x$ alloys using muon spin rotation and high-pressure magnetization, revealing how magnetic properties evolve with composition and symmetry, and discussing the role of Dzyaloshinskii-Moriya interactions.

Contribution

It provides a detailed analysis of magnetic ground states across the alloy series and explores the influence of non-centrosymmetry and Dzyaloshinskii-Moriya interactions on magnetic behavior.

Findings

Magnetic ground state properties vary with Si content.

Ordered magnetic moments decrease with increasing Si.

Dzyaloshinskii-Moriya interactions influence magnetic fluctuations.

Abstract

We present a study of the alloying series of the non-centrosymmetric $f$-electron intermetallic CePt$_3$B$_{1-x}$Si$_x$ by means of muon spin rotation and relaxation measurements. In addition, we include a high pressure magnetization investigation of the stoichiometric parent compound CePt$_3$B. From our data we establish the nature of the magnetic ground state properties of the series, derive the ordered magnetic moment as function of stoichiometry and gain insight into the evolution of the symmetry of the ordered magnetic state with $x$. We thus can verify the notion that the behavior of the sample series can essentially be understood within the framework of the Doniach phase diagram. Further, our findings raise the issue of the role the Dzyaloshinskii-Moriya magnetic interaction plays in correlated electron materials, and its effect on magnetic fluctuations in such materials.