On the Coexistence Magnetism/Superconductivity in the Heavy-Fermion Superconductor CePt$_3$Si

TL;DR

This study investigates the microscopic coexistence of magnetism and superconductivity in CePt$_3$Si using zero-field muon spin rotation, revealing that both phenomena occur throughout the entire sample volume.

Contribution

It provides experimental evidence for the microscopic coexistence of magnetism and superconductivity in CePt$_3$Si, a heavy-fermion superconductor, using muon spin rotation techniques.

Findings

Magnetism is present throughout the entire sample volume.

Magnetism and superconductivity coexist microscopically.

Muon spin rotation detects spontaneous internal fields in the magnetic phase.

Abstract

The interplay between magnetism and superconductivity in the newly discovered heavy-fermion superconductor CePt$_3$Si has been investigated using the zero-field $\mu$SR technique. The $\mu$SR data indicate that the whole muon ensemble senses spontaneous internal fields in the magnetic phase, demonstrating that magnetism occurs in the whole sample volume. This points to a microscopic coexistence between magnetism and heavy-fermion superconductivity.