Hybridized propagating spin waves in a CoFeB/IrMn bilayer

Wang, Hanchen; He, Wenqing; Yuan, Rundong; Wang, Yizhan; Wang, Jinlong; Zhang, Y.; Medlej, Israa; Chen, Jilei; Yu, Guoqiang; Han, X. F.; Ansermet, Jean-Philippe; Yu, Haiming

doi:10.1103/physrevb.106.064410

Cited by 12 publications

(4 citation statements)

References 59 publications

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“…It can be observed that the spin-up and spin-down states are separated, with the latter contributing primarily to the states at the Fermi level. The spin-polarization ratio can be calculated using the following formula: [50,51]…”

Section: Resultsmentioning

confidence: 99%

“…It can be observed that the spin‐up and spin‐down states are separated, with the latter contributing primarily to the states at the Fermi level. The spin‐polarization ratio can be calculated using the following formula: [ 50,51 ]

\begin{equation} P(\%)=\frac{N\uparrow ({E}_{F})-N\downarrow ({E}_{F})}{N\uparrow ({E}_{F})+N\downarrow ({E}_{F})} \end{equation}

where N↑( E F ) and N↓( E F ) are the spin‐up and spin‐down electrons at the Fermi level ( E F ), respectively. Since N↑( E F ) = 0, 2D Mg 4 N 4 should be a half‐metal with 100% spin polarization around the Fermi level.…”

Section: Resultsmentioning

confidence: 99%

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Genuine Dirac Half‐Metals in Two‐Dimensions

Gong,

Ding,

Xie

et al. 2023

Advanced Science

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When spin‐orbit coupling (SOC) is absent, all proposed half‐metals with twofold degenerate nodal points at the K (or K′) point in 2D materials are classified as “Dirac half‐metals” owing to the way graphene is utilized in the earliest studies. Actually, each band crossing point at the K or K′ point is described by a 2D Weyl Hamiltonian with definite chirality; hence, it should be a Weyl point. To the best of its knowledge, there have not yet been any reports of a genuine (i.e., fourfold degenerate) 2D Dirac point half‐metal. In this work, using first‐principles calculations, it proposes for the first time that the 2D d0‐type ferromagnet Mg4N4 is a genuine 2D Dirac half‐metal candidate with a fourfold degenerate Dirac point at the S high‐symmetry point, intrinsic magnetism, a high Curie temperature, 100% spin polarization, topology robust under the SOC and uniaxial and biaxial strains, and spin‐polarized edge states. This work can serve as a starting point for future predictions of intrinsically magnetic materials with genuine 2D Dirac points, which will aid the frontier of topo‐spintronics research in 2D systems.

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Section: Resultsmentioning

confidence: 99%

\begin{equation} P(\%)=\frac{N\uparrow ({E}_{F})-N\downarrow ({E}_{F})}{N\uparrow ({E}_{F})+N\downarrow ({E}_{F})} \end{equation}

Section: Resultsmentioning

confidence: 99%

Genuine Dirac Half‐Metals in Two‐Dimensions

Gong,

Ding,

Xie

et al. 2023

Advanced Science

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“…So, the dispersions of DE and BV modes are calculated to further clarify the physical mechanism. Considering the ∼ 150 nm thickness of the LSMO film and finite k excitation over ∼ 1 rad/µm, the dispersion equation of dipole-exchange spin waves derived by Kalinikos and Slavin [37,38] is used as follows:…”

Section: Mechanism Of Three-magnon Scatteringmentioning

confidence: 99%

Nonlinear three-magnon scattering in low-damping La_0.67Sr_0.33MnO₃ thin films

Zhang 张,

Sheng 盛,

Chen 陈

et al. 2023

Chinese Phys. B

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Three-magnon scattering, a nonlinear process in which a high-energy magnon splits into two low-energy magnons with energy and momentum conservation, have been widely studied in magnonics community. Here, we report experimental observation of nonlinear three-magnon scattering in La0.67Sr0.33MnO3 thin films with low magnetic damping (~10-4) by all-electric and angle-resolved spin wave spectroscopy. The reflection spectra of the spin wave resonance with high excitation at Damon–Eshbach configuration demonstrate a scattering regime with gradual signal disappearance, where a magnon of Damon–Eshbach mode decays into two magnons of volume mode above threshold power (-10 dBm) of injected microwave. The nonlinear scattering is only allowed at low-field regime and calculated dispersions of dipole-exchange spin wave claim the mechanism of allowed and forbidden three-magnon scattering. The films and heterostructures of La0.67Sr0.33MnO3havebeenalready demonstrated with rich physical phenomena and great versatility, and the nonlinear magnetic dynamics of La0.67Sr0.33MnO3 thin films is revealed in this work, which offer more possibility of applications to oxide magnonics and nonlinear magnonic devices.

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“…Similarly, the plant WD40 TFs also play vital role in response to abiotic stress. For instance, the LbTTG1 is derived from Limonium bicolor (Bunge) Kuntze and participates in the development of the Arabidopsis epidermis and improves the salt tolerance of transgenic Arabidopsis by reducing ion accumulation and increasing osmotic pressure (Yuan et al, 2019). Inhibiting OsRACK 1 A [The receptor for activated C kinase 1 in rice (Oryza sativa L.)] can enhance the tolerance of rice to salt stress and accumulate a large amount of abscisic acid (ABA) (Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Identifying and expression analysis of WD40 transcription factors in walnut

Chen

et al. 2022

The Plant Genome

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Walnut (Juglans regia L.) is an important woody oil plant and will be affected by abiotic and biological stress during its growth and development. The WD‐repeat (WD40) protein is widely involved in plant growth, development, metabolism, and abiotic stress response. To explore the stress response mechanism of walnut, based on the complete sequencing results of the walnut genome, this study identified and analyzed the physiological, biochemical, genetic structure, and conservative protein motifs of 42 JrWD40 genes, whose expression to abnormal temperature were tested to predict the potential biological function. The results showed that the open reading frame (ORF) of theseWD40 genes were 807–2,460 bp, encoding peptides were 29,610.55–90,387.98 Da covering 268–819 amino acids, as well as 12–112 phosphorylation sites. JrWD40 proteins were highly conserved with four to five WD40 domains and shared certain similarity to WD40 proteins from Arabidopsis thaliana (L.) Heynh. JrWD40 genes can be induced to varying degrees by low and high temperature treatments. JrWD40‐32, JrWD40‐27, JrWD40‐35, and JrWD40‐21 are affected by high temperature more seriously and their expression levels are higher; while JrWD40‐37, JrWD40‐26, JrWD40‐20, JrWD40‐24, and other genes are inhibited under low temperature stress. JrWD40‐40, JrWD40‐28, and JrWD40‐18 were first suppressed with low expression, while as the treatment time prolonging, the expression level was increased under cold condition. JrWD40‐14, JrWD40‐18, JrWD40‐34, and JrWD40‐3 displayed strong transcriptions response to both heat and cold stress. These results indicated that JrWD40 genes can participate in walnut adaptation to adversity and can be used as important candidates for walnut resistance molecular breeding.

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Hybridized propagating spin waves in a CoFeB/IrMn bilayer

Cited by 12 publications

References 59 publications

Genuine Dirac Half‐Metals in Two‐Dimensions

Genuine Dirac Half‐Metals in Two‐Dimensions

Nonlinear three-magnon scattering in low-damping La_0.67Sr_0.33MnO₃ thin films

Identifying and expression analysis of WD40 transcription factors in walnut

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Hybridized propagating spin waves in a CoFeB/IrMn bilayer

Cited by 12 publications

References 59 publications

Genuine Dirac Half‐Metals in Two‐Dimensions

Genuine Dirac Half‐Metals in Two‐Dimensions

Nonlinear three-magnon scattering in low-damping La0.67Sr0.33MnO3 thin films

Identifying and expression analysis of WD40 transcription factors in walnut

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Product

Resources

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Nonlinear three-magnon scattering in low-damping La_0.67Sr_0.33MnO₃ thin films