Spin current and magneto-electric effect in non-collinear magnets
Hosho Katsura, Naoto Nagaosa, and Alexander V. Balatsky
TL;DR
This paper introduces a new microscopic mechanism for the magneto-electric effect in non-collinear magnets, based on spin supercurrents, drawing analogies with superconductors to explain electric polarization in spiral spin structures.
Contribution
It presents a novel theoretical mechanism linking spin supercurrents to the magneto-electric effect in non-collinear magnets, expanding understanding of their electric properties.
Findings
Derivation of spin supercurrent distribution in non-collinear magnets
Explanation of electric polarization via spin supercurrents
Application to spiral spin structures
Abstract
A new microscopic mechanism of the magneto-electric (ME) effect based on the spin supercurrent is theoretically presented for non-collinear magnets. The close analogy between the superconductors (charge current) and magnets (spin current) is drawn to derive the distribution of the spin supercurrent and the resultant electric polarization. Application to the spiral spin structure is discussed.
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Taxonomy
TopicsMagnetic Properties of Alloys · Magnetic Properties and Applications · Superconducting Materials and Applications