Antiferromagnetic spintronics

Fukami, Shunsuke; Lorenz, Virginia O.; Gomonay, Olena

doi:10.1063/5.0023614

Cited by 75 publications

(38 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In an extended cylindrical AFM tube and in cylindrical coordinates r → (r, ϕ, z), the above Klein-Gordon equation admits the non-diffractive Bessel solutions ψ n ðr; tÞ / J ' ðk ? rÞ expði'ϕ þ ik z zÞ expðÀiωtÞ; (11) with ℓ = 0, ±1, ±2, . .…”

Section: Twisted Afm Magnonsmentioning

confidence: 99%

“…Their low-energy excitations, the spin waves with magnons as quanta of excitations, can be utilized to transmit and process information at low-energy cost and without heat dissipation due to Ohmic losses [1][2][3] . Recent research on AFM [4][5][6][7][8][9][10][11] demonstrated their potential for the next generation of spintronics and optoelectronic devices. Experiments evidenced that the AFM ordering is switchable on THz time scale by charge current or THz pulses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chiral logic computing with twisted antiferromagnetic magnon modes

et al. 2021

View full text Add to dashboard Cite

Antiferromagnetic (AFM) materials offer an exciting platform for ultrafast information handling with low cross-talks and compatibility with existing technology. Particularly interesting for low-energy cost computing is the spin wave-based realization of logic gates, which has been demonstrated experimentally for ferromagnetic waveguides. Here, we predict chiral magnonic eigenmodes with a finite intrinsic, magnonic orbital angular momentum ℓ in AFM waveguides. ℓ is an unbounded integer determined by the spatial topology of the mode. We show how these chiral modes can serve for multiplex AFM magnonic computing by demonstrating the operation of several symmetry- and topology-protected logic gates. A Dzyaloshinskii–Moriya interaction may arise at the waveguide boundaries, allowing coupling to external electric fields and resulting in a Faraday effect. The uncovered aspects highlight the potential of AFM spintronics for swift data communication and handling with high fidelity and at a low-energy cost.

show abstract

Section: Twisted Afm Magnonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chiral logic computing with twisted antiferromagnetic magnon modes

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The net magnetic moment associated with ferromagnets allows their magnetic ordering to be easily manipulated by modest magnetic fields [2], giving rise to a vast set of technologies ranging from the compass and electrical engines to magnetic-based logic and hard-disk-drives [3,4]. In contrast, while antiferromagnets (AFMs) represent the overwhelming majority of magnetically-ordered materials [5], their intrinsic lack of net magnetic moment leads to the intense search for alternative means to leverage their magnetic ordering [6,7]. If successful, such identification of suitable levers will allow us to design and construct AFM-based technologies that would far supersede the speed, scalability and robustness of their ferromagnetic counterparts [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Phononic manipulation of antiferromagnetic domains in NiO

et al. 2022

View full text Add to dashboard Cite

The interaction between the crystal lattice and spins appears to be a very efficient mechanism for non-thermal manipulation of magnetic order. A particularly intriguing question is whether lattice vibrations can also be used to control or even switch domains in collinear antiferromagnets, where all other mechanisms fail. To answer this question, here we study the magnetic effects induced by tunable and narrow-band infrared optical pulses in single crystals of antiferromagnetic nickel oxide. Our measurements reveal that a resonant excitation in the vicinity of the frequency of longitudinal optical phonons leads to the displacement of antiferromagnetic domains in NiO, potentially revealing a promising method to manipulate antiferromagnetic order.

show abstract

“…Research in antiferromagnetic spintronics has garnered enormous interest over the past decades due to its high-frequency (THz) dynamics, long distance spin-wave transport, spin-orbit effects and robustness against external magnetic field perturbations, making them attractive for practical applications (see Refs. [1,2] and references therein). In particular, considerable efforts have been made to understand and manipulate the magnetic domain structure [3], spin-wave scattering at the domain walls [4] and domain wall motion [5,6].…”

Section: Introductionmentioning

confidence: 99%

Magnetostriction and magnetostructural domains in CoTiO$_3$

Dey,

Hoffmann,

Klingeler

2021

Preprint

View full text Add to dashboard Cite

We report the magnetostrictive length changes of CoTiO3 studied by means of high-resolution dilatometry in magnetic fields (B) up to 15 T. In the long-range antiferromagnetically ordered phase below TN = 38 K, the easy-plane type spin structure undergoes a spin-reorientation transition in the ab plane in magnetic fields B||ab ≈ 2 T. We observe pronounced length changes driven by external magnetic field in this field region indicating significant magnetoelastic coupling in CoTiO3. Specifically, we observe anisotropic deformation of the lattice for fields applied in the ab plane. While, for B 2 T, in-plane magnetostriction shows that the lattice expands (contracts) parallel (perpendicular) to the field direction, the opposite behaviour appear at higher fields. Furthermore, there are remarkable effects of slight changes in the applied uniaxial pressure on the magnetostrictive response of CoTiO3 persisting to temperatures well above TN. The data evidence the presence of magnetic domains below TN as well as of structural ones in CoTiO3. The presence of magnetic domains in the spin ordered phase is further evidenced by an additional 3-fold magnetic anisotropy appearing below TN. We discuss the effects of rotational magnetic domains on isothermal magnetization and magnetostriction and interpret our results on the basis of a multi-domain phenomenological model.

show abstract

Antiferromagnetic spintronics

Cited by 75 publications

References 52 publications

Chiral logic computing with twisted antiferromagnetic magnon modes

Chiral logic computing with twisted antiferromagnetic magnon modes

Phononic manipulation of antiferromagnetic domains in NiO

Magnetostriction and magnetostructural domains in CoTiO$_3$

Contact Info

Product

Resources

About