Anomalous Nernst effect in compensated ferrimagnetic CoxGd1-x films
arXiv:2211.15074 · doi:10.1063/5.0121156
Abstract
The anomalous Nernst effect (ANE) is one of the most intriguing thermoelectric phenomena which has attracted growing interest both for its underlying physics and potential applications. Typically, a large ANE response is observed in magnets with pronounced magnetizations or nontrivial Berry curvature. Here, we report a significant ANE signal in compensated ferrimagnetic CoxGd1-x alloy films, which exhibit vanishingly small magnetization. In particular, we found that the polarity of ANE signal is dominated by the magnetization orientation of the transition metal Co sublattices, rather than the net magnetization of CoxGd1-x films. This observation is not expected from the conventional understanding of ANE but is analogous to the anomalous Hall effect in compensated ferrimagnets. We attribute the origin of ANE and its Co-dominant property to the Co-dominant Berry curvature. Our work could trigger a more comprehensive understanding of ANE and may be useful for building energy-harvesting devices by employing ANE in compensated ferrimagnets.
References in corpus (25)
- Berry Phase Effects on Electronic Properties
- Anomalous Hall effect
- Spin Caloritronics
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
- Large anomalous Nernst effect at room temperature in a chiral antiferromagnet
- Berry phase effect in anomalous thermoelectric transport
- Roadmap of spin-orbit torques
- 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
- Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets
- Quantum transport theory of anomalous electric, thermoelectric, and thermal Hall effects in ferromagnets
- Anomalous current-induced spin torques in ferrimagnets near compensation
- Mott Relation for Anomalous Hall and Nernst effects in Ga1-xMnxAs Ferromagnetic Semiconductors
- Current-induced domain wall motion in compensated ferrimagnet
- Observation of the spin Nernst effect
- Anomalous transport due to Weyl fermions in the chiral antiferromagnets Mn, = Sn, Ge
- High-speed domain wall racetracks in a magnetic insulator
- Large anomalous Nernst effect in thin films of the Weyl semimetal Co2MnGa
- Thermal generation, manipulation and detection of skyrmions
- Transverse thermoelectric generation using magnetic materials
- Fermi level tuning and atomic ordering induced giant anomalous Nernst effect in Co2MnAl1-xSix Heusler alloy
- Spin-polarized Weyl cones and gigantic anomalous Nernst effect in ferromagnetic Heusler films
- Scattering-Independent Anomalous Nernst Effect in Ferromagnets
- Rare-earth/transition-metal magnets at finite temperature: Self-interaction-corrected relativistic density functional theory in the disordered local moment picture
- Spin-Hall and Anisotropic Magnetoresistance in Ferrimagnetic Co-Gd / Pt layers