Spin and spin current -- From fundamentals to recent progress

Abstract

Along with the progress of spin science and spintronics research, the flow of electron spins, (i.e. spin current), has attracted interest. New phenomena and electronic states were explained in succession using the concept of spin current. Moreover, as many of the conventionally known spintronics phenomena became well organized based on spin current, it has rapidly been recognized as an essential concept in a wide range of condensed matter physics. In this article, we focus on recent developments in the physics of spin, spin current, and their related phenomena, where the conversion between spin angular momentum and different forms of angular momentum plays an essential role. Starting with an introduction to spin current, we first discuss the recent progress in spintronic phenomena driven by spin-exchange coupling: spin pumping, topological Hall torque, and emergent inductor. We, then, extend our discussion to the interaction/interconversion of spins with heat, lattice vibrations, and charge current and address recent progress and perspectives on the spin Seebeck and Peltier effects. Next, we review the interaction between mechanical motion and electron/nuclear spins and argue the difference between the Barnett field and rotational Doppler effect. We show that the Barnett effect reveals the angular momentum compensation temperature, at which the net angular momentum is quenched in ferrimagnets.

23 pages, 19 figures, Introduction and References updated

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• Direct electronic measurement of the spin Hall effect
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• Theory of magnon-driven spin Seebeck effect
• Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
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• Thermal spin dynamics of yttrium iron garnet
• Thermal imaging of spin Peltier effect
• Observation of spin current in quantum spin liquid
• Cavity mediated manipulation of distant spin currents using cavity-magnon-polariton
• Spin Insulatronics
• Coherent elastic excitation of spin waves
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• Nanomechanical Detection of Itinerant Electron Spin Flip
• Picosecond spin Seebeck effect
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• Magnetic memory and current amplification devices using moving domain walls
• Theory of spin Peltier effect
• Nonvolatile Electric Field Control of Thermal Magnons in the Absence of an Applied Magnetic Field
• Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids
• Efficient current-induced domain-wall displacement SrRuO3
• Electrically Switchable van der Waals Magnon Valves
• Theory for spin torque in Weyl semimetal with magnetic texture
• Spin caloritronics in a CrBr${}_3$-based magnetic van der Waals heterostructure
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• Spin-Motive Forces and Current-Induced Torques in Ferromagnets
• Observation of nuclear-spin Seebeck effect
• Intrinsic and extrinsic tunability of Rashba spin-orbit coupled emergent inductors
• Observation of Vector Spin Seebeck Effect in a Noncollinear Antiferromagnet
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• Magnon polarons in the spin Peltier effect
• Angular momentum compensation manipulation to room temperature of the ferrimagnet Ho${}_{3-x}$Dy${}_x$Fe${}_5$O${}_{12}$ detected by the Barnett effect
• Magnetic-field-induced suppression of spin Peltier effect in Pt/${\mathrm{Y}}_3\mathrm{F}{\mathrm{e}}_5{\mathrm{O}}_{12}$ system at room temperature
• Magnetic order of Dy${}^{3+}$ and Fe${}^{3+}$ moments in antiferromagnetic DyFeO${}_3$ probed by spin Hall magnetoresistance and spin Seebeck effect
• Detection of induced paramagnetic moments in Pt on Y${}_3$Fe${}_5$O${}_{12}$ via x-ray magnetic circular dichroism
• Fabrication of yttrium-iron-garnet/Pt multilayers for the longitudinal spin Seebeck effect
• Role of Magnon-Magnon Scattering in Magnon Polaron Spin Seebeck Effect
• Triplon current generation in solids
• Local and nonlocal spin Seebeck effect in lateral Pt-$\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3$-Pt devices at low temperatures
• Antiferromagnetic spin Seebeck effect across the spin-flop transition: A stochastic Ginzburg-Landau simulation
• Transient response of spin Peltier effect revealed by lock-in thermoreflectance measurement
• Spin Seebeck effect in quantum magnet Pb2V3O9
• Magnetic field dependence of the nonlocal spin Seebeck effect in Pt/YIG/Pt systems at low temperatures
• Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial Bi${}_x$Y${}_{3-x}$Fe${}_5$O${}_{12}$ films
• Facet-dependent magnon-polarons in epitaxial ferrimagnetic Fe3O4 thin films

Cited by in corpus (14)

• Orbital Pumping in Ferrimagnetic Insulators
• Topological nature of the proper spin current and the spin-Hall torque
• Towards an experimental proof of the magnonic Aharonov$-$Casher effect
• Nonlinear Seebeck effect in Ni${}_{81}$Fe${}_{19}$|Pt at room temperature
• Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co3Sn2S2
• Probing the Spin-Momentum Locking in Rashba Surfaces via Spin Current
• Unconventional Spin-orbit Torques by Two-dimensional Multilayered MXenes for Future Nonvolatile Magnetic Memories
• Orbital currents in lattice multiorbital systems: Continuity equation, torques, and RKKY interaction
• Spin Pumping into two-dimensional systems
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• Cryogenic spin Peltier effect detected by a RuO${}_2$-AlO${}_x$ on-chip microthermometer
• Low temperature spin Seebeck effect in non-magnetic vanadium dioxide
• Spin-to-charge conversion in orthorhombic RhSi topological semimetal crystalline thin films
• Field Dispersion and Strong Coupling of Nuclear-Electron Spin Excitation in MnCO${}_3$