Imprinting and driving electronic orbital magnetism using magnons

Abstract

Magnons, as the most elementary excitations of magnetic materials, have recently emerged as a prominent tool in electrical and thermal manipulation and transport of spin, and magnonics as a field is considered as one of the pillars of modern spintronics. On the other hand, orbitronics, which exploits the orbital degree of freedom of electrons rather than their spin, emerges as a powerful platform in efficient design of currents and redistribution of angular momentum in structurally complex materials. Here, we uncover a way to bridge the worlds of magnonics and electronic orbital magnetism, which originates in the fundamental coupling of scalar spin chirality, inherent to magnons, to the orbital degree of freedom in solids. We show that this can result in efficient generation and transport of electronic orbital angular momentum by magnons, thus opening the road to combining the functionalities of magnonics and orbitronics to their mutual benefit in the realm of spintronics applications.

arXiv comment9 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:1910.03317

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Cited by in corpus (8)

• Observation of the orbital Hall effect in a light metal Ti
• Orbitronics: Orbital Currents in Solids
• Spin dynamics of itinerant electrons: local magnetic moment formation and Berry phase
• Unidirectional orbital magnetoresistance in light metal/ferromagnet bilayers
• Evidence of Magnon-Mediated Orbital Magnetism in a Quasi-2D Topological Magnon Insulator
• Discovery of terahertz-frequency orbitally-coupled magnons in a kagome ferromagnet
• Electric polarization induced by magnons and magnon Nernst effects
• Tunable magnon band topology and magnon orbital Nernst effect in noncollinear antiferromagnets