Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal

Abstract

In metallic ferromagnets, the Berry curvature of underlying quasiparticles can cause an electric voltage perpendicular to both magnetization and an applied temperature gradient, a phenomenon called the anomalous Nernst effect (ANE). Here, we report the observation of a giant ANE in the full-Heusler ferromagnet Co${}_2$MnGa, reaching $S_{yx}\sim -6$ $\mu$V/K at room $T$, one order of magnitude larger than the maximum value reported for a magnetic conductor. With increasing temperature, the transverse thermoelectric conductivity or Peltier coefficient ${\alpha }_{yx}$ shows a crossover between $T$-linear and $-T\log (T)$ behaviors, indicating the violation of Mott formula at high temperatures. Our numerical and analytical calculations indicate that the proximity to a quantum Lifshitz transition between type-I and type-II magnetic Weyl fermions is responsible for the observed crossover properties and an enhanced ${\alpha }_{yx}$. The $T$ dependence of ${\alpha }_{yx}$ in experiments and numerical calculations can be understood in terms of a quantum critical scaling function predicted by the low energy effective theory over more than a decade of temperatures. Moreover, the observation of chiral anomaly or an unsaturated positive longitudinal magnetoconductance also provide evidence for the existence of Weyl fermions in Co${}_2$MnGa.

arXiv comment43 pages, 11 figures, 1 Table, To appear in Nature Physics

References in corpus (16)

• Berry Phase Effects on Electronic Properties
• Anomalous Hall effect
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Type-II Weyl Semimetals
• Weyl Semimetal in a Topological Insulator Multilayer
• Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
• Anomalous Hall effect arising from noncollinear antiferromagnetism
• Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
• Evidence for Magnetic Weyl Fermions in a Correlated Metal
• Universal Scaling Behavior of Anomalous Hall Effect and Anomalous Nernst Effect in Itinerant Ferromagnets
• Thermally driven spin injection from a ferromagnet into a non-magnetic metal
• Time-Reversal-Breaking Weyl Fermions in Magnetic Heusler Alloys
• Anomalous Nernst and Righi-Leduc effects in Mn${}_3$Sn: Berry curvature and entropy flow
• Mott Relation for Anomalous Hall and Nernst effects in Ga1-xMnxAs Ferromagnetic Semiconductors
• Anomalous-Hall heat current and Nernst effect in the ferromagnet CuCr_2Se_{4-x}Br_x
• Nernst and magneto-thermal conductivity in a lattice model of Weyl fermions

Cited by in corpus (191)

• Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
• Progress and prospects in magnetic topological materials
• Concurrence of anomalous Hall effect and charge density wave in a superconducting topological kagome metal
• Electrical Manipulation of a Topological Antiferromagnetic State
• Zero-field Nernst effect in a ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2
• Anomalous Nernst effect beyond the magnetization scaling relation in the ferromagnetic Heusler compound Co${}_2$MnGa
• Axion-Field-Enabled Nonreciprocal Thermal Radiation in Weyl Semimetals
• Electronic Transport and quantum oscillation of Topological Semimetals
• Giant room temperature anomalous Hall effect and magnetically tuned topology in the ferromagnetic Weyl semimetal Co2MnAl
• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
• Topological quantum materials from the viewpoint of chemistry
• Topological Materials Discovery from Crystal Symmetry
• Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn${}_3$$X$, $X$ = Sn, Ge
• An ideal Weyl semimetal induced by magnetic exchange
• Large anomalous Nernst effect in a van der Waals ferromagnet Fe${}_3$GeTe${}_2$
• Giant anomalous Nernst effect in the magnetic Weyl semimetal Co3Sn2S2
• Large anomalous Nernst effect in thin films of the Weyl semimetal Co2MnGa
• Berry curvature unravelled by the Nernst effect in Mn${}_3$Ge
• First Principles Calculations for Topological Quantum Materials
• Transverse thermoelectric generation using magnetic materials
• Topological Nernst effect of the two-dimensional skyrmion lattice
• Fermi level tuning and atomic ordering induced giant anomalous Nernst effect in Co2MnAl1-xSix Heusler alloy
• Magnetism and anomalous transport in the Weyl semimetal PrAlGe: Possible route to axial gauge fields
• Spin-polarized Weyl cones and gigantic anomalous Nernst effect in ferromagnetic Heusler films
• Anomalous transverse response of Co${}_2$MnGa and universality of the room-temperature ${\alpha }_{ij}^A/{\sigma }_{ij}^A$ ratio across topological magnets
• Thermoelectrics: from Longitudinal to Transverse
• Heat flux sensing by anomalous Nernst effect in Fe-Al thin films on a flexible substrate
• The study of magnetic topological semimetals by first principles calculations
• Finite-temperature violation of the anomalous transverse Wiedemann-Franz law
• Thickness dependence of the anomalous Hall effect in thin films of the topological semimetal Co${}_2$MnGa
• Topological charge-entropy scaling in kagome Chern magnet TbMn${}_6$Sn${}_6$
• Disorder-Induced Elevation of Intrinsic Anomalous Hall Conductance in an Electron-Doped Magnetic Weyl Semimetal
• Observation of anomalous Ettingshausen effect and large transverse thermoelectric conductivity in permanent magnets
• Creating Weyl nodes and controlling their energy by magnetization rotation
• Intrinsic anomalous Nernst effect amplified by disorder in a half-metallic semimetal
• Unconventional transverse transport above and below the magnetic transition temperature in Weyl semimetal EuCd${}_2$As${}_2$
• Exchange-biased topological transverse thermoelectric effects in a Kagome ferrimagnet
• Signatures for half-metallicity and nontrivial surface states in a Kagome-lattice magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$
• Large anomalous Hall and Nernst effect from nodal line symmetry breaking in Fe${}_2$MnX (X=P,As,Sb)
• Thickness dependence of the anomalous Nernst effect and the Mott relation of Weyl-semimetal Co2MnGa thin films
• Giant spin Hall angle in the Heusler alloy Weyl ferromagnet Co${}_2$MnGa
• Characterization of topological band structures away from the Fermi level by anomalous Nernst measurements
• Magnon-induced Giant Anomalous Nernst Effect in Single Crystal MnBi
• Evidence for a magnetic-field induced ideal type-II Weyl state in antiferromagnetic topological insulator Mn(Bi1-xSbx)2Te4
• Quantum Interactions in Topological R166 Kagome Magnet
• Spin-Polarized Antiferromagnetic Spintronics
• Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation
• Enhanced Anomalous Hall Effect in Magnetic Topological Semimetal Co${}_3$Sn${}_{2-x}$In${}_x$S${}_2$
• Thickness dependent tuning of the Berry curvature in a ferromagnetic Weyl semimetal
• Enhancement of transverse thermoelectric conductivity originating from stationary points in nodal line
• Enhancement of anomalous Nernst effect in Ni/Pt superlattice
• High-temperature dependence of anomalous Ettingshausen effect in SmCo${}_5$-type permanent magnets
• Magnetization switching induced by spin-orbit torque from Co2MnGa magnetic Weyl semimetal thin films
• Exceptionally large anomalous Hall effect due to anticrossing of spin-split bands in the antiferromagnetic half-Heusler compound TbPtBi
• Giant Anomalous Nernst Effect in Noncollinear Antiferromagnetic Mn-based Antiperovskite Nitrides
• Multifunctional Antiperovskites driven by Strong Magnetostructural Coupling
• Spintronic thermal management
• Breakdown of the scaling relation of anomalous Hall effect in Kondo lattice ferromagnet USbTe
• Giant effective damping of octupole oscillation in an antiferromagnetic Weyl semimetal
• Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials
• Spin-mediated charge-to-heat current conversion phenomena in ferromagnetic binary alloys
• Anomalous Hall and Nernst effects in ferrimagnetic Mn${}_4$N films: possible interpretation and prospect for enhancement
• Signatures of Weyl fermion annihilation in a correlated kagome magnet
• Electronic structure and physical properties of EuAuAs single crystal
• Creation of flexible spin-caloritronic material with giant transverse thermoelectric conversion by nanostructure engineering
• Visualizing half-metallic bulk band structure with multiple Weyl cones of the Heusler ferromagnet
• First-principles investigation of magnetic and transport properties in hole-doped shandite compounds Co${}_3$In${}_x$Sn${}_{2-x}$S${}_2$
• Combinatorial tuning of electronic structure and thermoelectric properties in Co${}_2$MnAl${}_{1-x}$Si${}_x$ Weyl semimetals
• What's knot to like? Observation of a linked loop quantum state
• Field-Induced Lifshitz Transition in the Magnetic Weyl Semimetal Candidate PrAlSi
• Electronic structure and topology across $T_c$ in magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$
• Giant intrinsic anomalous terahertz Faraday rotation in the magnetic Weyl semimetal Co${}_2$MnGa at room temperature
• Scaling of Berry-curvature monopole dominated large linear positive magnetoresistance
• A mono-material Nernst thermopile with hermaphroditic legs
• Large Anomalous Hall Effect at Room Temperature in a Fermi-Level-Tuned Kagome Antiferromagnet
• Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
• Hybridizing anomalous Nernst effect in artificially tilted multilayer based on magnetic topological material
• Fundamentals and advances in transverse thermoelectrics
• First-principles calculation of anomalous Hall and Nernst conductivity by local Berry phase
• Fingerprints of the conformal anomaly on the thermoelectric transport in Dirac and Weyl semimetals: Result from a Kubo formula
• Perspective: Heusler interfaces -- opportunities beyond spintronics?
• Gigantic Anisotropy of Self-Induced Spin-Orbit Torque in Weyl Ferromagnet Co2MnGa
• Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te
• Temperature dependence of the anomalous Nernst effect in Ni${}_2$MnGa shape memory alloy
• High power density energy harvesting devices based on the anomalous Nernst effect of Co/Pt magnetic multilayers
• Permanent-magnet-based transverse thermoelectric generator with high fill factor driven by anomalous Nernst effect
• Multifunctional composite magnet realizing record-high transverse thermoelectric generation
• Comprehensive Anisotropic Linear Optical Properties of Weyl Semimetals, TaAs and NbAs
• Hidden spin-texture at topological domain walls drive exchange bias in a Weyl semimetal
• Anomalous Nernst effect in a ferrimagnetic nodal-line semiconductor Mn${}_3$Si${}_2$Te${}_6$
• Thermal and thermoelectric properties of an antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Anomalous Nernst effect in compensated ferrimagnetic CoxGd1-x films
• Phenomenological analysis of transverse thermoelectric generation and cooling performance in magnetic/thermoelectric hybrid systems
• Seebeck-driven transverse thermoelectric generation in magnetic hybrid bulk materials
• Large anomalous Hall angle in a topological semimetal candidate TbPtBi
• Hall viscosity for optical phonons
• Origin of negative anomalous Nernst thermopower in Mn-Ga ordered alloys
• Transient response of spin Peltier effect revealed by lock-in thermoreflectance measurement
• Anisotropic Nodal-Line-Derived Large Anomalous Hall Conductivity in ZrMnP and HfMnP
• Shubnikov-de Haas Oscillations and Nontrivial Topological State in a New Weyl Semimetal Candidate SmAlSi
• Large Violation of the Wiedemann Franz Law in Heusler, Ferromagnetic, Weyl Semimetal Co${}_2$MnAl
• Chemical-substitution-driven giant anomalous Hall and Nernst effects in magnetic cubic Heusler compounds
• Evolution of Magnetism in Magnetic Topological Semimetal NdSb${}_x$Te${}_{2-x+\delta }$
• Perspective on nanoscale magnetic sensors using giant anomalous Hall effect in topological magnetic materials for read head application in magnetic recording
• Weyl Semimetals with $S_4$ symmetry
• Giant anomalous Hall conductivity in the itinerant ferromagnet LaCrSb3 and the effect of f-electrons
• Sign-reversed anomalous Nernst effect in the ferromagnetic Weyl-semimetal Fe${}_{3-x}$GeTe${}_2$: the role of Fe vacancies
• Symmetry-selective quasiparticle scattering and electric field tunability of the ZrSiS surface electronic structure
• Colossal anomalous Hall and Nernst effect from the breaking of nodal-line symmetry in Cu2CoSn Weyl semimetal: A first-principles study
• Magnetoelastic and Magnetostrictive Properties of Co${}_2$XAl Heusler Compounds
• Anomalous Ettingshausen effect in iron-carbon alloys
• Magnetization governed magnetoresistance anisotropy in topological semimetal CeBi
• Tuning quantum transport by controlling spin reorientations in Dirac semimetal candidates Eu${}_{1-x}$Sr${}_x$MnSb${}_2$
• Thermal effects in spintronic materials and devices: an experimentalist's guide
• Influence of a chiral chemical potential on Weyl hybrid junctions
• Nernst effect of high-mobility Weyl electrons in NdAlSi enhanced by a Fermi surface nesting instability
• Anisotropic transport properties and topological Hall effect in the annealed kagome antiferromagnet FeGe
• Structure, physical properties, and magnetically tunable topological phases in topological semimetal EuCuBi
• Field-induced spin reorientation in the antiferromagnetic Dirac material EuMnBi${}_2$ revealed by neutron and resonant x-ray diffraction
• Large anomalous Nernst effect across the magneto-structural transition in bulk Ni-Co-Mn-Sn full Heusler alloy
• Trompe L'oeil Ferromagnetism: magnetic point group analysis
• Role of chemical disorder in tuning the Weyl points in vanadium doped Co${}_2$TiSn
• Linear Response in Topological Materials
• Anisotropic magneto-thermal transport in Co${}_2$MnGa thin films
• Seebeck-driven transverse thermoelectric generation in on-chip devices
• Transverse thermoelectric conversion in the mixed-dimensional semimetal WSi${}_2$
• Field-tunable Weyl points and large anomalous Hall effects in degenerate magnetic semiconductor EuMg${}_2$Bi${}_2$
• Dynamical Chiral Nernst Effect in Twisted Van der Waals Few Layers
• Surface state evolution induced by magnetic order in axion insulator candidate EuIn2As2
• Disorder- and Topology-Enhanced Fully Spin-Polarized Currents in Nodal Chain Spin-Gapless Semimetals
• Onsager reciprocal relation between anomalous transverse coefficients of an anisotropic antiferromagnet
• Modulation of the Nernst Thermoelectrics by Regulating the Anomalous Hall and Nernst Angles
• Magnetotransport induced by anomalous Hall effect
• Topological transitions by magnetization rotation in kagome monolayers of ferromagnetic Weyl semimetal Co-based shandite
• Spin and anomalous Hall effects emerging from topological degeneracy in Dirac fermion system CuMnAs
• High-field Studies on Layered Magnetic and Polar Dirac Metals
• AC Measurement of the Nernst effect of thin films at low temperatures
• Berry curvature derived negative magnetoconductivity observed in type-II magnetic Weyl semimetal films
• Quantum transport observed in films of magnetic topological semimetal EuSb${}_2$
• Pseudo-gauge Fields in Dirac and Weyl Materials
• Intrinsic and extrinsic anomalous transport properties of Heusler ferromagnets Fe${}_2$CoAl and Fe${}_2$NiAl from first principles
• High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy
• Ultrahigh Anomalous Nernst Thermopower and Thermal Hall Angle in YbMnBi2
• ErMn${}_6$Sn${}_6$: A Promising Kagome Antiferromagnetic Candidate for Room-Temperature Nernst Effect-based thermoelectrics
• Universal spin wave damping in magnetic Weyl semimetals
• Direct electrical probing of anomalous Nernst conductivity
• Anomalous Hall effect in type-I Weyl metals beyond the noncrossing approximation
• Ultra-low-current-density single-layer magnetic Weyl semimetal spin Hall nano-oscillators
• Simultaneous achievement of large anomalous Nernst effect and reduced thermal conductivity in sintered polycrystalline topological Heusler ferromagnets
• Giant Nernst Angle in Self-Intercalated van der Waals Magnet Cr${}_{1.25}$Te${}_2$
• Tunneling chirality Hall effect in type-I Weyl semimetals
• Broadband Optical Detection using the Spin Seebeck Effect
• Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co3Sn2S2
• Hall viscosity and hydrodynamic inverse Nernst effect in graphene
• Weyl-Luttinger phase transition in pyrochlore iridates revealed by Raman scattering
• Giant anomalous Nernst signal in the antiferromagnet YbMnBi2
• Thermoelectric effect in kagome lattice enhanced at van Hove singularities
• Chiral gauge field in fully-spin polarized Weyl semimetal with magnetic domain walls
• Colossal Layer Nernst Effect in Twisted Moiré Layers
• Large spontaneous Hall effect with flexible domain control in an antiferromagnetic material TaMnP
• Deposition temperature dependence of thermo-spin and magneto-thermoelectric conversion in Co${}_2$MnGa films on Y${}_3$Fe${}_5$O${}_{12}$ and Gd${}_3$Ga${}_5$O${}_{12}$
• Ferromagnetic-electrodes-induced Hall effect in topological Dirac semimetals
• Magnetic memory and distinct spin populations in ferromagnetic Co3Sn2S2
• Designing flexible hard magnetic materials for zero-magnetic-field operation of the anomalous Nernst effect
• Spin-orbit torques due to topological insulator surface states: an in-plane magnetization as a probe of extrinsic spin-orbit scattering
• Colossal anomalous Nernst effect in a correlated noncentrosymmetric kagome ferromagnet
• Magneto-elastic coupling in a sinusoidal modulated magnet Cr${}_2$GaN
• Nodal lines and boundary modes in topological Dirac semimetals with magnetism
• Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization
• Anomalous Nernst Effect and Its Implications for Time-Reversal Symmetry Breaking in Kagome Metal ScV6Sn6
• Magnetic, transport and topological properties of Co-based shandite thin films
• Anomalous Nernst effect in La0.5Ca0.5Coo3
• Evolution of Magnetoresistance in the magnetic topological semimetals NdSbxTe2-x
• Giant Magnetostriction by Design: A First-Principles Screening of Co-based Heusler Alloys
• Spin caloritronics: History and future prospects of experiments
• Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect
• Field-induced magnetic phase transitions and transport anomalies in GdAlSi
• Enhanced Anomalous Nernst Effect in the Ferromagnetic Kondo Lattice CeCo2As2
• Logarithmic Criticality in Transverse Thermoelectric Conductivity of the Ferromagnetic Topological Semimetal CoMnSb
• Topological Lifshitz transition-induced bipolarity of anomalous Nernst effect in kagome magnet YCo3
• Semiclassical thermoelectric transport in disordered Dirac electron system Ag2Te
• Design Principles for Topological Thermoelectrics
• Intrinsic Berry Curvature Driven Anomalous Hall and Nernst Effect in Co${}_2$MnSn
• Influence of chemical ordering on magnetocrystalline anisotropy and magnetoelastic properties in Weyl magnetic semimetal Co2MnGa thin films
• Thermoelectric relations in the conformal limit in Dirac and Weyl semimetals
• Anomalous Nernst effect in Co thin films under laser irradiation
• Microscopic theory of electrically induced spin torques in magnetic Weyl semimetals
• Origin of anomalous temperature dependence of Nernst effect in narrow-gap semiconductors
• Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal
• A Chiral Superlattice Route to Spin-Split Topological Antiferromagnetism
• Nernst Plateau in the Quantum Limit of Low-Carrier-Density Topological Insulators