Institution
Tohoku University
Education•Sendai, Japan•
About: Tohoku University is a education organization based out in Sendai, Japan. It is known for research contribution in the topics: Magnetization & Population. The organization has 72116 authors who have published 170791 publications receiving 3941714 citations. The organization is also known as: Tōhoku daigaku.
Topics: Magnetization, Population, Alloy, Amorphous solid, Amorphous metal
Papers published on a yearly basis
Papers
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TL;DR: This work makes use of an interface-driven spin-orbit coupling mechanism-the Rashba effect-in the oxide two-dimensional electron system (2DES) LaAlO3/SrTiO3 to achieve spin-to-charge conversion with unprecedented efficiency.
Abstract: The spin–orbit interaction couples the electrons’ motion to their spin. As a result, a charge current running through a material with strong spin–orbit coupling generates a transverse spin current (spin Hall effect, SHE) and vice versa (inverse spin Hall effect, ISHE). The emergence of SHE and ISHE as charge-to-spin interconversion mechanisms offers a variety of novel spintronic functionalities and devices, some of which do not require any ferromagnetic material. However, the interconversion efficiency of SHE and ISHE (spin Hall angle) is a bulk property that rarely exceeds ten percent, and does not take advantage of interfacial and low-dimensional effects otherwise ubiquitous in spintronic hetero- and mesostructures. Here, we make use of an interface-driven spin–orbit coupling mechanism—the Rashba effect—in the oxide two-dimensional electron system (2DES) LaAlO3/SrTiO3 to achieve spin-to-charge conversion with unprecedented efficiency. Through spin pumping, we inject a spin current from a NiFe film into the oxide 2DES and detect the resulting charge current, which can be strongly modulated by a gate voltage. We discuss the amplitude of the effect and its gate dependence on the basis of the electronic structure of the 2DES and highlight the importance of a long scattering time to achieve efficient spin-to-charge interconversion. The Rashba effect at the LaAlO3/SrTiO3 interface is shown to enable large and gate-tunable spin-to-charge conversion through the inverse Rashba–Edelstein effect.The spin current is injected, through spin pumping, from a NiFe film.
427 citations
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TL;DR: In this article, a tuned viscous mass damper (TVMD) was proposed for building systems, which uses a ball-screw mechanism to amplify an apparent mass amplifier using a fixed number of dampers.
Abstract: SUMMARY
In this study, we propose a new seismic control device, tuned viscous mass damper (TVMD), for building systems. We give a detailed description of an apparent mass amplifier using a ball-screw mechanism, which is one of the most important components for realizing the new device. We also derive a closed-form solution of an optimum seismic control design for a single-degree-of-freedom structure subjected to harmonic excitation. The performance of the new device is compared with those of the conventional viscous damper and viscous mass damper systems. The vibration control system using the TVMD is shown to be the most effective for linear structural systems with dampers having the same additional damping coefficient. The effectiveness of the TVMD for seismic excitation is verified by analyses and shake table tests with a small-scale TVMD. Copyright © 2011 John Wiley & Sons, Ltd.
427 citations
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TL;DR: In this article, the fundamental collineation of the almost complex structure of differentiable manifold with almost complex structures has been studied, where the set of manifold with complex structures is wider than the set with complex structure.
Abstract: then M is said to be a differentiable manifold with almost complex structure. (Tensor fields of the form given above may exist only for some manifolds with even dimension.) We shall call φ the fundamental collineation of the almost complex structure. The set of differentiable manifolds with almost complex structure is wider than the set of complex manifolds. Every differentiable manifold with almost complex structure φ admits a poistive definite Riemannian metric g such that
427 citations
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TL;DR: This is the first case where a glycoform modification is shown to improve glycoprotein affinity for the receptors without carbohydrate-binding capacity, suggesting a novel glyco-engineering strategy to improve ligand-receptor binding.
426 citations
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TL;DR: The results suggest that the function of BMPR-II is essential for epiblast differentiation and mesoderm induction during early mouse development.
426 citations
Authors
Showing all 72477 results
Name | H-index | Papers | Citations |
---|---|---|---|
John Q. Trojanowski | 226 | 1467 | 213948 |
Aaron R. Folsom | 181 | 1118 | 134044 |
Marc G. Caron | 173 | 674 | 99802 |
Masayuki Yamamoto | 171 | 1576 | 123028 |
Kenji Watanabe | 167 | 2359 | 129337 |
Rodney S. Ruoff | 164 | 666 | 194902 |
Frederik Barkhof | 154 | 1449 | 104982 |
Takashi Taniguchi | 152 | 2141 | 110658 |
Yoshio Bando | 147 | 1234 | 80883 |
Thomas P. Russell | 141 | 1012 | 80055 |
Ali Khademhosseini | 140 | 887 | 76430 |
Marco Colonna | 139 | 512 | 71166 |
David H. Barlow | 133 | 786 | 72730 |
Lin Gu | 130 | 868 | 56157 |
Yoichiro Iwakura | 129 | 705 | 64041 |