Development of the magnetism in the solid solution of the candidate Weyl semimetals Ce${}_x$Pr${}_{1-x}$AlGe

Abstract

We investigate the macroscopic and microscopic physical properties of the solid solution of Ce${}_{1-x}$Pr${}_x$AlGe. The series tunes from CeAlGe with its multi-$\vec{k}$ structure and a major Moment in the ab-plane, to PrAlGe with an easy-c-axis ferromagnetic ground state co-existing with a low density of nanoscale textured magnetic Domain walls. Using AC-, DC-susceptiblity, resistivity, specific heat, muon spin relaxation/rotation and neutron scattering we analyze the magnetic ground state of the series. We provide further evidence supporting our previous claim for spin-glass like properties in pure PrAlGe. With introduction of Pr to CeAlGe the finite magnetic field required to stabilize the topological multi-$\vec{k}$ magnetic phase for $x=0$ becomes suppressed. The crossover between the two end-member ground states occurs in the vicinity of $x=0.3$, a region where we further anticipate the field-induced topological magnetic phase for $x<0.3$ to become the zero field ground state.

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Cited by in corpus (4)

• Multi-k magnetic structure and large anomalous Hall effect in candidate magnetic Weyl semimetal NdAlGe
• Anatomy of anomalous Hall effect due to magnetic fluctuations
• Spin order and dynamics in the topological rare-earth germanide semimetals
• Anisotropic Magnetic and Transport Properties of RAlGe (R = Y, Gd-Tm, Lu)