URu$_2$Si$_2$ under intense magnetic fields: from hidden order to spin-density wave

TL;DR

This paper reviews recent high-field experiments on URu$_2$Si$_2$, highlighting how magnetic fields induce Fermi surface changes, suppress hidden order, and promote a spin-density wave state.

Contribution

It provides a comprehensive synthesis of experimental data linking Fermi surface reconstructions to phase transitions in URu$_2$Si$_2$ under intense magnetic fields.

Findings

Fermi surface undergoes significant reconstruction under high magnetic fields.

Hidden order is suppressed and replaced by a spin-density wave state.

Multiple experimental techniques confirm the phase transition mechanisms.

Abstract

A review of recent state-of-the-art pulsed field experiments performed on URu$_2$Si$_2$ under a magnetic field applied along its easy magnetic axis $\mathbf{c}$ is given. Resistivity, magnetization, magnetic susceptibility, Shubnikov-de Haas, and neutron diffraction experiments are presented, permitting to emphasize the relationship between Fermi surface reconstructions, the destruction of the hidden-order and the appearance of a spin-density wave state in a high magnetic field.