Topological features in the ferromagnetic Weyl semimetal CeAlSi: Role of domain walls

Abstract

In the ferromagnetic (FM) Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. Our quantum oscillation (QO) data indicate that the FM ordering modifies the Fermi surface topology and also leads to an unusual drop in the QO amplitude. In the FM phase, we find a pressure-induced suppression of the anomalous and the loop Hall effects. This cannot be explained based on the electronic band structure or magnetic structure, both of which are nearly pressure independent. Instead, we show that a simplified model describing the scattering of Weyl fermions off FM domain walls can potentially explain the observed topological features. Our study highlights the importance of domain walls for understanding transport in FM Weyl semimetals.

arXiv commentThis article supersedes arXiv:2111.05742 including additional theoretical results. Published in Physical Review Research

References in corpus (51)

• Anomalous Hall effect
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
• Topological Materials: Weyl Semimetals
• Titanic Magnetoresistance in WTe2
• Theoretical Discovery/Prediction: Weyl Semimetal states in the TaAs material (TaAs, NbAs, NbP, TaP) class
• Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
• Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
• Magnetic Weyl Semimetal Phase in a Kagome Crystal
• Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
• Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2
• Evidence for Magnetic Weyl Fermions in a Correlated Metal
• Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
• Observation of the Type-II Weyl Semimetal Phase in MoTe2
• Experimental discovery of a topological Weyl semimetal state in TaP
• Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
• Generation of Projector Augmented-Wave atomic data: a 71 elements validated table in the XML format
• Experimental signatures of the mixed axial-gravitational anomaly in the Weyl semimetal NbP
• Weyl Node and Spin Texture in Trigonal Tellurium and Selenium
• Quantum oscillations, thermoelectric coefficients and the Fermi surface of semi-metallic WTe2
• Quantum phases driven by strong correlations
• Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
• Symmetry Demanded Topological Nodal-line Materials
• Topological Magnetic Phase in the Candidate Weyl Semimetal CeAlGe
• Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals
• Magnetism and anomalous transport in the Weyl semimetal PrAlGe: Possible route to axial gauge fields
• A new noncollinear ferromagnetic Weyl semimetal with anisotropic anomalous Hall effect
• Observation of Weyl fermions in a magnetic non-centrosymmetric crystal
• Single crystal investigation of proposed type-II Weyl semimetal CeAlGe
• A pressure-induced topological phase with large Berry curvature in Pb${}_{1-x}$Sn${}_x$Te
• Transition from Intrinsic to Extrinsic Anomalous Hall Effect in the Ferromagnetic Weyl Semimetal PrAlGe${}_{1-x}$Si${}_x$
• Pressure tuning the Fermi-surface topology of the Weyl semimetal NbP
• Metallic Interface Emerging at Magnetic Domain Wall of Antiferromagnetic Insulator---Fate of Extinct Weyl Electrons
• Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi
• Observation of Fermi arcs and Weyl nodes in a non-centrosymmetric magnetic Weyl semimetal
• Mapping Domain Wall Topology in the Magnetic Weyl Semimetal CeAlSi
• Origin and Large Enhancement of Large Spin Hall Angle in Weyl Semimetals LaAl$X$ ($X$=Si, Ge)
• Voltage-driven magnetization switching and spin pumping in Weyl semimetals
• Infinite Berry Curvature of Weyl Fermi Arcs
• Tunneling anomalous Hall effect in a ferroelectric tunnel junction
• Towards the manipulation of topological states of matter: A perspective from electron transport
• Anomalous quantum oscillations and evidence for a non-trivial Berry phase in SmSb
• Two linear regimes in optical conductivity of a Type-I Weyl semimetal: the case of elemental tellurium
• Shubnikov-de Haas Oscillations and Nontrivial Topological State in a New Weyl Semimetal Candidate SmAlSi
• Domain wall skew scattering in ferromagnetic Weyl metals
• Topological van Hove singularities at phase transitions in Weyl metals
• New Type of Quantum Oscillations Stemmed From the Strong Weyl Fermions - 4f Electrons Exchange Interaction
• Topological superconducting domain walls in magnetic Weyl semimetals

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• Anomalous Hall effect with plateaus observed in a magnetic Weyl semimetal NdAlGe at low temperatures
• Pressure tuning of intrinsic and extrinsic sources to the anomalous Hall effect in CrGeTe${}_3$
• Activation of anomalous Hall effect and orbital magnetization by domain walls in altermagnets
• Rich unconventional Hall effects in a single quasi-kagome Kondo Weyl semimetal candidate Ce${}_3$TiSb${}_5$
• Topological Hall effect enhanced at magnetic transition fields in a frustrated magnet EuCd${}_2$
• Structural characterization of the candidate Weyl semimetal CeGaGe
• Large circular photogalvanic effect in the noncentrosymmetric magnetic Weyl semimetal CeAlSi
• Spin order and dynamics in the topological rare-earth germanide semimetals
• Crystalline electric field excitations in Weyl semimetal \textit{R}AlSi (\textit{R} = Ce, Pr and Nd)
• Isotropic Dirac fermion and anomalous oscillator strength of zeroth Landau level transition
• Incommensurate magnetic order drives singular angular magnetoresistance in a Weyl semimetal