Voltage-Controlled Spin-Wave Coupling in Adjacent Ferromagnetic-Ferroelectric Heterostructures

Садовников, А. В.; Grachev, A. A.; Бегинин, Е. Н.; Шешукова, С. Е.; Sharaevskiĭ, Yu. P.; Никитов, С. А.

doi:10.1103/physrevapplied.7.014013

Cited by 94 publications

(48 citation statements)

References 38 publications

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“…We attribute this observation to either the hysteresis of the Fe stripe (i.e., a finite remanent magnetization component of Fe along θ = 90°) or the differences in magnetic susceptibilities of Fe and YIG 24 . The observation of a significant wavelength-conversion process in very small applied field is promising in view of low-power consuming and compact magnonic applications, where an additional biasing magnetic field is avoided and instead electric fields control the magnonic functionality 42,43 .…”

Section: Discussionmentioning

confidence: 99%

Efficient wavelength conversion of exchange magnons below 100 nm by magnetic coplanar waveguides

et al. 2020

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Exchange magnons are essential for unprecedented miniaturization of GHz electronics and magnon-based logic. However, their efficient excitation via microwave fields is still a challenge. Current methods including nanocontacts and grating couplers require advanced nanofabrication tools which limit the broad usage. Here, we report efficient emission and detection of exchange magnons using micron-sized coplanar waveguides (CPWs) into which we integrated ferromagnetic (m) layers. We excited magnons in a broad frequency band with wavelengths λ down to 100 nm propagating over macroscopic distances in thin yttrium iron garnet. Applying time-and spatially resolved Brillouin light scattering as well as micromagnetic simulations we evidence a significant wavelength conversion process near mCPWs via tunable inhomogeneous fields. We show how optimized mCPWs can form microwave-tomagnon transducers providing phase-coherent exchange magnons with λ of 37 nm. Without any nanofabrication they allow one to harvest the advantages of nanomagnonics by antenna designs exploited in conventional microwave circuits.

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Section: Discussionmentioning

confidence: 99%

Efficient wavelength conversion of exchange magnons below 100 nm by magnetic coplanar waveguides

et al. 2020

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“…Magnonics, a young and evolving field, has received extensive research interests in the modern magnetism research community [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Similar to spintronics, which deals with electron spin, magnonics utilizes magnon (the quanta of spin wave) to carry and process information.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

et al. 2019

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Magnonics, an emerging research field, aims to control and manipulate spin waves in magnetic materials and structures. However, the current understanding of spin waves remains quite limited. This review attempts to provide an overview of the anomalous behaviors of spin waves in various types of magnetic materials observed thus far by inelastic light scattering experiments. The anomalously large asymmetry of anti-Stokes to Stokes intensity ratio, broad linewidth, strong resonance effect, unique polarization selection, and abnormal impurity dependence of spin waves are discussed. In addition, the mechanisms of these anomalous behaviors of spin waves are proposed. spectroscopy is applied for studying vibrational properties of materials. However, due to the anomalous behaviors of spin wave scattering comparing with vibrational scattering, Raman spectroscopy study of spin wave is difficult and limited. In this paper, we present a review of anomalous behaviors of spin waves observed by inelastic light scattering experiments, especially by Raman spectroscopy. The large asymmetry of anti-Stokes to Stokes intensity ratio, broad linewidth, strong resonance effect, unique polarization selection, and abnormal impurity dependence of spin waves are discussed, and a proposed model for the mechanisms of spin flip, spin relaxing, and spin wave scattering is presented for understanding these anomalous behaviors of spin waves. In addition, two magnonic crystal structures are proposed for manipulating spin waves through analyses of the abnormal impurity dependence of spin waves. The review of the anomalous behaviors of spin waves and the proposed models provide the directions for easier experimental study of spin waves by inelastic light scattering, which will be useful for raising the research efforts for investigating spin waves. This is important for the emerging research of magnonics, which has received extensive interests in the modern magnetism research community.

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“…These experiments demonstrate that antiferromagnetic magnons can efficiently transmit spin current in uniaxial AFMs. The combination of long-distance transport and voltage or strain control of the magnon propagation, for example, [28][29][30][31][32], opens interesting perspectives for functionalized magnonic devices. Metallic AFMs present an interesting paradigm because, in principle, both electron-mediated and magnon-mediated spin currents coexist.…”

Section: Introductionmentioning

confidence: 99%

Competition between Electronic and Magnonic Spin Currents in Metallic Antiferromagnets

Wen

Zhuo

et al. 2019

Phys. Rev. Applied

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We investigate the spin-orbit torque in a Ta/Ir-Mn/Cu/Ni-Fe multilayer heterostructure and relate it to spin current transmission through the Ir-Mn layer. We identify several spin current transport regimes as a function of the temperature and the thickness of the Ir-Mn layer. To interpret this experiment, we develope a drift-diffusion model accounting for both electron and magnon transport in the heterostructures. This model allows us to discriminate between the contributions of electrons and magnons to the total spin current in Ir-Mn. We find that the electron-magnon spin convertance is one order of magnitude larger than the interfacial electronic spin conductance, while the magnon diffusion length is about ten times longer than the electronic spin relaxation length. This study demonstrates that magnonic spin transport dominates over electronic spin transport even in disorder metallic antiferromagnets.

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Voltage-Controlled Spin-Wave Coupling in Adjacent Ferromagnetic-Ferroelectric Heterostructures

Cited by 94 publications

References 38 publications

Efficient wavelength conversion of exchange magnons below 100 nm by magnetic coplanar waveguides

Efficient wavelength conversion of exchange magnons below 100 nm by magnetic coplanar waveguides

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

Competition between Electronic and Magnonic Spin Currents in Metallic Antiferromagnets

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