Yuya Sakuraba

Spin magnetic moments in the half-metallic ferromagnet—ferromagnet interface region detected by depth-resolved x-ray magnetic circular dichroism

Y. Fujita, Kenta Amemiya, Kodchakorn Simalaotao, Yoshio Miura et autres

We study spin magnetic moments near half-metallic Co2FexMn1−xSi (CFMS)/metal interfaces using depth-resolved x-ray magnetic circular dichroism (XMCD) and analyze their robustness against thermal fluctuations. We prepare epitaxial magnetic multilayered films with CFMS/CoFe and CFMS/Ag interfaces and observe the x-ray absorption spectroscopy (XAS) …

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Large-language-model-driven adaptive search space definition for autonomous closed-loop materials exploration

Yuma Iwasaki, Ryo Toyama, Ryo Tamura, Shôichi Matsuda et autres

Autonomous closed-loop materials exploration systems that couple machine learning with robotic experimentation, often called self-driving laboratories, are increasingly used to accelerate materials discovery. However, their end-to-end autonomy is limited by the need for human experts to specify and periodically reconfigure the search …

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Influence of strain on the anomalous Hall and Nernst effects in Fe thin films

Ao Nakagawa, Ryo Toyama, Keisuke Masuda, Weinan Zhou et autres

jp (code pays fourni par la source)

Influence of strain on the anomalous Hall and Nernst effects in Fe thin films

Ao Nakagawa, Ryo Toyama, Keisuke Masuda, Weinan Zhou et autres

jp (code pays fourni par la source)

Evaluation of spin mixing conductance in Co 2 Fe Ga 0.5 Ge 0.5 / Pt bilayer and the effect of ultrathin Cu, Ni, Ru, Ta, or Cr insertion layers

Meena Bhat, Hirofumi Suto, Taisuke Sasaki, A. Perumal et autres

Improving the spin mixing conductance at the ferromagnet/heavy metal (FM/HM) interface with a low Gilbert damping constant in the FM layer is a key requirement for developing efficient spintronic devices. To evaluate the potential of Co2FeGa0.5Ge0.5 as the FM layers in such …

in, jp (code pays fourni par la source)

Single-material anomalous Nernst heat-flux sensor enabled by heat-assisted magnetization reversal

Weinan Zhou, Hirofumi Suto, Yuya Sakuraba

Heat-flux sensors based on the transverse thermoelectric phenomenon of anomalous Nernst effect have attracted increasing interest in recent years due to the advantages stemming from simple and planar sensor structures. However, the difference in Seebeck coefficients of the constituent materials makes the …

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Visualizing bulk band structure in Fe 4 N thin films by spin- and angle-resolved photoelectron spectroscopy

Karen Nakanishi, Masaaki Kakoki, Kiyotaka Ohwada, Kenta Kuroda et autres

The bulk band structure of an prepared ferromagnetic Fe 4 N thin film has been investigated using spin- and angle-resolved photoelectron spectroscopy with synchrotron radiation. It was observed that most of the bands near the Fermi level are of minority spin. The …

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Dictionary learning-based screening of layered materials via interface Fermi surface matching

Yuta Mizutori, Kodchakorn Simalaotao, Yuto Shimazaki, Yoshio Miura et autres

Novel materials for spintronic devices require not only bulk electronic properties but also electronic structures compatible with magnetic/nonmagnetic interfaces. First-principles calculations have revealed the importance of electron band matching (EBM) at the Fermi energy for transport properties such as giant magnetoresistance (GMR). …

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Anomaly detection of fermi surface morphology in Co2MnGaxGe1-x via interpretable machine learning

Daichi Ishikawa, Kentaro Fuku, Yoshio Miura, Yasuhiko Igarashi et autres

The Fermi surface provides indispensable insights into the electronic structure of materials. Here, we present a robust analysis framework employing an interpretable machine learning approach to investigate Fermi surfaces. Complex Fermi surface images of the Heusler alloy Co2MnGaxGe1−x, along with corresponding spin …

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Influence of extrinsic skew scattering on the enhancement of the anomalous Nernst coefficient in CoFe thin films by Cu-Ir addition

Aritra Ray, Subrata Biswas, Rajkumar Modak, Nanhe Kumar Gupta et autres

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Influence of strain on the anomalous Hall and Nernst effects in Fe thin films

Ao Nakagawa, Ryo Toyama, Keisuke Masuda, Weinan Zhou et autres

jp (code pays fourni par la source)

Mechanism of anomalous Hall and Nernst effects in quasi-two-dimensional MnAlGe epitaxial thin films

Nanhe Kumar Gupta, Ryo Toyama, Fuya Makino, Benugopal Bairagya et autres

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