Temperature dependence of the anomalous Nernst effect in Ni${}_2$MnGa shape memory alloy

Abstract

We report a detailed investigation of the Ni${}_2$MnGa shape memory alloy through magnetic, electronic, and thermal measurements. Our measurements of the anomalous Nernst effect (ANE) reveal that this technique is very sensitive to the onset of the pre-martensitic transition in sharp contrast to other transport measurements. With the ANE being sensitive to changes at the Fermi surface, we infer on the link between the structural modulations and the modulation of the Fermi surface via its nesting features, with the magnetic field induced strain being the mediating mechanism.

References in corpus (21)

• Universal Scaling Behavior of Anomalous Hall Effect and Anomalous Nernst Effect in Itinerant Ferromagnets
• Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
• Anomalous Nernst effect beyond the magnetization scaling relation in the ferromagnetic Heusler compound Co${}_2$MnGa
• Mott Relation for Anomalous Hall and Nernst effects in Ga1-xMnxAs Ferromagnetic Semiconductors
• Adaptive modulations of martensites
• First-principles study of lattice instabilities in the ferromagnetic martensite Ni${}_2$MnGa
• Phase transitions in Ni2+xMn1-xGa with a high Ni excess
• Premartensitic transition driven by magnetoelastic interaction in bcc ferromagnetic $N{i}_{2}MnGa$
• Large negative magnetoresistance in a ferromagnetic shape memory alloy : Ni_{2+x}Mn_{1-x}Ga
• Combined experimental and theoretical investigation of the premartensitic transition in Ni${}_2$MnGa
• Anomalous Nernst and Hall effects in magnetized platinum and palladium
• Premartensite to martensite transition and its implications on the origin of modulation in Ni2MnGa ferromagnetic shape memory alloy
• Residual stress induced stabilization of martensite phase and its effect on the magneto-structural transition in Mn rich Ni-Mn-In/Ga magnetic shape memory alloys
• A high resolution synchrotron x-ray powder diffraction study of the incommensurate modulation in the martensite phase of Ni2MnGa: Evidence for nearly 7M modulation and phason broadening
• Nernst effect anisotropy as a sensitive probe of Fermi surface distortions from electron-nematic order
• Observation of Phasons in Magnetic Shape Memory Alloy Ni2MnGa
• Hall effect in heavy-fermion metals
• Resistivity and Thermopower of Ni2.19Mn0.81Ga
• Large anomalous Nernst effect across the magneto-structural transition in bulk Ni-Co-Mn-Sn full Heusler alloy
• Detection of weak-order phase transitions in ferromagnets by ac resistometry
• Coupling between a charge density wave and magnetism in an Heusler material

Cited by in corpus (3)

• Robust evidence for the stabilization of the premartensite phase in Ni-Mn-In magnetic shape memory alloys by chemical pressure
• Precursor of the premartensite in Ni2MnGa magnetic shape memory alloy: A pair distribution function study
• Intrinsic Berry Curvature Driven Anomalous Hall and Nernst Effect in Co${}_2$MnSn