Evolution of antiferromagnetic domains in the all-in-all-out ordered pyrochlore Nd${}_2$Zr${}_2$O${}_7$

Abstract

We report the observation of magnetic domains in the exotic, antiferromagnetically ordered all-in-all-out state of Nd${}_2$Zr${}_2$O${}_7$, induced by spin canting. The all-in-all-out state can be realized by Ising-like spins on a pyrochlore lattice and is established in Nd${}_2$Zr${}_2$O${}_7$ below 0.31 K for external magnetic fields up to 0.14 T. Two different spin arrangements can fulfill this configuration which leads to the possibility of magnetic domains. The all-in-all-out domain structure can be controlled by an external magnetic field applied parallel to the [111] direction. This is a result of different spin canting mechanism for the two all-in-all-out configurations for such a direction of the magnetic field. The change of the domain structure is observed through a hysteresis in the magnetic susceptibility. No hysteresis occurs, however, in case the external magnetic field is applied along [100].

Accepted for publication in Phys. Rev. B, 6 pages, 6 figures

References in corpus (3)

• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Physical properties of a candidate quantum spin-ice system Pr2Hf2O7
• All-in/all-out magnetic domains: X-ray diffraction imaging and magnetic field control

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