Berry curvature induced magnetotransport in 3D noncentrosymmetric metals
- 14 October 2021
- journal article
- research article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 34 (2), 025702
- https://doi.org/10.1088/1361-648x/ac2fd4
Abstract
We study the magnetoelectric and magnetothermal transport properties of noncentrosymmetric metals using semiclassical Boltzmann transport formalism by incorporating the effects of Berry curvature and orbital magnetic moment. These effects impart quadratic-B dependence to the magnetoelectric and magnetothermal conductivities, leading to intriguing phenomena such as planar Hall effect, negative magnetoresistance, planar Nernst effect and negative Seebeck effect. The transport coefficients associated with these effects show the usual oscillatory behavior with respect to the angle between the applied electric field and magnetic field. The bands of noncentrosymmetric metals are split by Rashba spin-orbit coupling except at a band touching point. For Fermi energy below (above) the band touching point, giant (diminished) negative magnetoresistance is observed. This difference in the nature of magnetoresistance is related to the magnitudes of the velocities, Berry curvature and orbital magnetic moment on the respective Fermi surfaces, where the orbital magnetic moment plays the dominant role. The absolute magnetoresistance and planar Hall conductivity show a decreasing (increasing) trend with Rashba coupling parameter for Fermi energy below (above) the band touching point.Keywords
This publication has 66 references indexed in Scilit:
- Giant Rashba-type spin splitting in bulk BiTeINature Materials, 2011
- Effects of impurities on the upper critical fieldin superconductors without inversion symmetryPhysical Review B, 2008
- Berry-Phase Effect in Anomalous Thermoelectric TransportPhysical Review Letters, 2006
- Berry Phase Correction to Electron Density of States in SolidsPhysical Review Letters, 2005
- Observation of the Spin Hall Effect in SemiconductorsScience, 2004
- Spintronics: Fundamentals and applicationsReviews of Modern Physics, 2004
- Spin-galvanic effectNature, 2002
- Thermoelectric response of an interacting two-dimensional electron gas in a quantizing magnetic fieldPhysical Review B, 1997
- A no-go theorem for regularizing chiral fermionsPhysics Letters B, 1981
- A PCAC puzzle: π0→γγ in the σ-modelIl Nuovo Cimento A (1971-1996), 1969