Angular Dependence of the High-Magnetic-Field Phase Diagram of URu2Si2

TL;DR

This study investigates how the magnetic phase transitions in URu2Si2 depend on the angle of an applied magnetic field, revealing a simple cosine law governing their behavior in high magnetic fields.

Contribution

It demonstrates that all magnetic transitions and crossovers in URu2Si2 follow a 1/cos(Q) law, linking their behavior to the field component along the c-axis.

Findings

Magnetic transitions follow a 1/cos(Q) law.

Transitions are controlled by the field projection on the c-axis.

High-field phase diagram mapped up to 60 T.

Abstract

We present measurements of the magnetoresistivity RHOxx of URu2Si2 single crystals in high magnetic fields up to 60 T and at temperatures from 1.4 K to 40 K. Different orientations of the magnetic field have been investigated permitting to follow the dependence on Q of all magnetic phase transitions and crossovers, where Q is the angle between the magnetic field and the easy-axis c. We find out that all magnetic transitions and crossovers follow a simple 1/cos(Q) -law, indicating that they are controlled by the projection of the field on the c-axis.