Correlating magnetic structure and magnetotransport in semimetal thin films of Eu${}_{1-x}$Sm${}_x$TiO${}_3$

Abstract

We report on the evolution of the average and depth-dependent magnetic order in thin film samples of biaxially stressed and electron-doped EuTiO${}_3$ for samples across a doping range $<$0.1 to 7.8 $\times 10^{20}$ cm${}^{-3}$. Under an applied in-plane magnetic field, the G-type antiferromagnetic ground state undergoes a continuous spin-flop phase transition into in-plane, field-polarized ferromagnetism. The critical field for ferromagnetism slightly decreases with an increasing number of free carriers, yet the field evolution of the spin-flop transition is qualitatively similar across the doping range. Unexpectedly, we observe interfacial ferromagnetism with saturated Eu${}^{2+}$ moments at the substrate interface at low fields preceding ferromagnetic saturation throughout the bulk of the degenerate semiconductor film. We discuss the implications of these findings for the unusual magnetotransport properties of this compound.

arXiv comment7 pages, 4 figures

References in corpus (16)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Topological Materials: Weyl Semimetals
• Experimental discovery of Weyl semimetal TaAs
• Topological Hall effect in the A-phase of MnSi
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
• Interface-Induced Phenomena in Magnetism
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• An alternative to the topological interpretation of the transverse resistivity anomalies in SrRuO3
• Antiferrodistortive phase transition in EuTiO3
• Reversible Control of Magnetic Interactions by Electric Field in a Single Phase Material
• Evidence of a topological Hall effect in Eu${}_{1-x}$Sm${}_x$TiO${}_3$
• reductus: a stateless Python data-reduction service with a browser frontend
• Intrinsic Structural Disorder and the Magnetic Ground State in Bulk EuTiO3
• Lattice instabilities in bulk EuTiO3

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• Investigation on high-order planar Hall effect in trigonal PtBi${}_2$
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