Scaling of Berry-curvature monopole dominated large linear positive magnetoresistance
arXiv:2205.00389 · doi:10.1073/pnas.2208505119
Abstract
The linear positive magnetoresistance (LPMR) is a widely observed phenomenon in topological materials, which is promising for potential applications on topological spintronics. However, its mechanism remains ambiguous yet and the effect is thus uncontrollable. Here, we report a quantitative scaling model that correlates the LPMR with the Berry curvature, based on a ferromagnetic Weyl semimetal CoS2 that bears the largest LPMR of over 500% at 2 Kelvin and 9 Tesla, among known magnetic topological semimetals. In this system, masses of Weyl nodes existing near the Fermi level, revealed by theoretical calculations, serve as Berry-curvature monopoles and low-effective-mass carriers. Based on the Weyl picture, we propose a relation \[\text{MR}=\frac{e}{\hbar }B{{Ω}_{\text{F}}}\], with B being the applied magnetic field and \[{{Ω}_{\text{F}}}\] the average Berry curvature near the Fermi surface, and further introduce temperature factor to both MR/B slope (MR per unit field) and anomalous Hall conductivity, which establishes the connection between the model and experimental measurements. A clear picture of the linearly slowing down of carriers, i.e., the LPMR effect, is demonstrated under the cooperation of the k-space Berry curvature and real-space magnetic field. Our study not only provides an experimental evidence of Berry curvature induced LPMR for the first time, but also promotes the common understanding and functional designing of the large Berry-curvature MR in topological Dirac/Weyl systems for magnetic sensing or information storage.
References in corpus (39)
- VASPKIT: A User-friendly Interface Facilitating High-throughput Computing and Analysis Using VASP Code
- Berry Phase Effects on Electronic Properties
- Weyl and Dirac Semimetals in Three Dimensional Solids
- WannierTools: An open-source software package for novel topological materials
- Wannier90 as a community code: new features and applications
- Titanic Magnetoresistance in WTe2
- Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
- Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal CdAs
- Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
- Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
- Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
- Catalogue of Topological Electronic Materials
- Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
- Non-saturating magnetoresistance in heavily disordered semiconductors
- Berry phase effect in anomalous thermoelectric transport
- Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal
- Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
- Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
- Zero-field Nernst effect in a ferromagnetic kagome-lattice Weyl-semimetal Co3Sn2S2
- Large nonsaturating magnetoresistance and signature of non-degenerate Dirac nodes in ZrSiS
- Large linear magnetoresistance in Dirac semi-metal Cd3As2 with Fermi surfaces close to the Dirac points
- Large linear magnetoresistance in the Dirac semimetal TlBiSSe
- High performance Wannier interpolation of Berry curvature and related quantities: WannierBerri code
- Hall effect in the extremely large magnetoresistance semimetal WTe
- Quantum Transport in Topological Semimetals under Magnetic Fields
- Pi Berry phase and Zeeman splitting of TaP probed by high field magnetotransport measurements
- Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide
- Magnetism and anomalous transport in the Weyl semimetal PrAlGe: Possible route to axial gauge fields
- Linear magneto-chiral transport in tilted type-I and type-II Weyl Semimetals
- Linear magnetoresistance in metals: guiding center diffusion in a smooth random potential
- 33% Giant Anomalous Hall Current Driven by both Intrinsic and Extrinsic Contributions in Magnetic Weyl Semimetal Co3Sn2S2
- Non-saturating large magnetoresistance in semimetals
- Linear magnetoconductivity in an intrinsic topological Weyl semimetal
- Nonsaturating magnetoresistance, anomalous Hall effect, and magnetic quantum oscillations in ferromagnetic semimetal PrAlSi
- Linear magnetochiral effect in Weyl semimetals
- Enhancement of transverse thermoelectric conductivity originating from stationary points in nodal line
- Topologically-Driven Linear Magnetoresistance in Helimagnetic FeP
- Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
- Theoretical study of topological properties of ferromagnetic pyrite CoS
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