Charge pumping induced by magnetic texture dynamics in Weyl semimetals

Abstract

Spin-momentum locking in Weyl semimetals correlates the orbital motion of electrons with background magnetic textures. We show here that the dynamics of a magnetic texture in a magnetic Weyl semimetal induces a pumped electric current that is free from Joule heating. This pumped current can be regarded as a Hall current induced by axial electromagnetic fields equivalent to the magnetic texture. Taking a magnetic domain wall as a test case, we demonstrate that a moving domain wall generates a pumping current corresponding to the localized charge.

5 pages, 1 figure, 1 table

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• Thickness-dependent quantum transport of Weyl fermions in ultra-high-quality SrRuO3 films
• Structural and transport properties of highly Ru-deficient SrRu0.7O3 thin films prepared by molecular beam epitaxy: comparison with stoichiometric SrRuO3
• Realization of the electric-field driven "one-material"-based magnetic tunnel junction using van der Waals antiferromagnetic MnPX3 (X: S, Se)
• Intrinsic torques emerging from anomalous velocity in magnetic textures
• Intrinsic insulating transport characteristics in low-carrier density EuCd2As2 films
• Chiral gauge field in fully-spin polarized Weyl semimetal with magnetic domain walls
• Mixed topology ring states for Hall effect and orbital magnetism in skyrmions of Weyl semimetals
• Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect
• Spin motive force by the momentum-space Berry phase in magnetic Weyl semimetals
• Formal Integration of Electron Scattering Processes via Separation of Dynamical and Geometric Contributions