Search Results - "Murakawa, H"

Detection of Berry's Phase in a Bulk Rashba Semiconductor by Murakawa, H., Bahramy, M. S., Tokunaga, M., Kohama, Y., Bell, C., Kaneko, Y., Nagaosa, N., Hwang, H. Y., Tokura, Y.

“…The motion of electrons in a solid has a profound effect on its topological properties and may result in a nonzero Berry's phase, a geometric quantum phase…”
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Large Enhancement of Thermoelectric Efficiency Due to a Pressure-Induced Lifshitz Transition in SnSe by Nishimura, T, Sakai, H, Mori, H, Akiba, K, Usui, H, Ochi, M, Kuroki, K, Miyake, A, Tokunaga, M, Uwatoko, Y, Katayama, K, Murakawa, H, Hanasaki, N

“…The Lifshitz transition, a change in Fermi surface topology, is likely to greatly influence exotic correlated phenomena in solids, such as high-temperature…”
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Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors by Sakano, M, Bahramy, M S, Katayama, A, Shimojima, T, Murakawa, H, Kaneko, Y, Malaeb, W, Shin, S, Ono, K, Kumigashira, H, Arita, R, Nagaosa, N, Hwang, H Y, Tokura, Y, Ishizaka, K

“…We investigate the two-dimensional highly spin-polarized electron accumulation layers commonly appearing near the surface of n-type polar semiconductors BiTeX…”
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Chirality of matter shows up via spin excitations by Bordács, S., Kézsmárki, I., Szaller, D., Demkó, L., Kida, N., Murakawa, H., Onose, Y., Shimano, R., Rõõm, T., Nagel, U., Miyahara, S., Furukawa, N., Tokura, Y.

“…Chirality is usually manifested by differences in a material’s response to left- and right-circularly polarized light. This difference is the result of the…”
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Giant Rashba-type spin splitting in bulk BiTeI by Ishizaka, K., Bahramy, M. S., Murakawa, H., Sakano, M., Shimojima, T., Sonobe, T., Koizumi, K., Shin, S., Miyahara, H., Kimura, A., Miyamoto, K., Okuda, T., Namatame, H., Taniguchi, M., Arita, R., Nagaosa, N., Kobayashi, K., Murakami, Y., Kumai, R., Kaneko, Y., Onose, Y., Tokura, Y.

“…There has been increasing interest in phenomena emerging from relativistic electrons in a solid, which have a potential impact on spintronics and…”
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Enhanced directional dichroism of terahertz light in resonance with magnetic excitations of the multiferroic Ba2CoGe2O7 oxide compound by Kézsmárki, I, Kida, N, Murakawa, H, Bordács, S, Onose, Y, Tokura, Y

“…We propose that concurrently magnetic and ferroelectric, i.e., multiferroic, compounds endowed with electrically active magnetic excitations (electromagnons)…”
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Local structural disorder introduced by Cr in fcc high-/medium-entropy alloys consisting of 3d transition metal elements by Furuya, D., Oda, M., Chen, Z., Li, L., Murakawa, H., Sakai, H., Nitani, H., Niwa, Y., Abe, H., Uetsuka, H., Karube, T., Inui, H., Hanasaki, N.

“…High-/medium-entropy alloys (H/MEAs) have attracted attention for their excellent mechanical properties. According to first-principles calculations, the atomic…”
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One-way transparency of four-coloured spin-wave excitations in multiferroic materials by Kézsmárki, I., Szaller, D., Bordács, S., Kocsis, V., Tokunaga, Y., Taguchi, Y., Murakawa, H., Tokura, Y., Engelkamp, H., Rõõm, T., Nagel, U.

“…The coupling between spins and electric dipoles governs magnetoelectric phenomena in multiferroics. The dynamical magnetoelectric effect, which is an inherent…”
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Vanishing, moving and immovable interfaces in fast reaction limits by Iida, M., Monobe, H., Murakawa, H., Ninomiya, H.

“…We consider a type of singular limit problem called the fast reaction limit. The problem of the fast reaction limit involves studying the behaviour of…”
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Optical response of relativistic electrons in the polar BiTeI semiconductor by Lee, J S, Schober, G A H, Bahramy, M S, Murakawa, H, Onose, Y, Arita, R, Nagaosa, N, Tokura, Y

“…The transitions between the spin-split bands by spin-orbit interaction are relevant to many novel phenomena such as the resonant dynamical magnetoelectric…”
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Fast reaction limit of a three-component reaction–diffusion system by Murakawa, H., Ninomiya, H.

“…We consider a three-component reaction–diffusion system with a reaction rate parameter, and investigate its singular limit as the reaction rate tends to…”
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Thermoelectric probe for Fermi surface topology in the three-dimensional Rashba semiconductor BiTeI by Ideue, T., Ye, L., Checkelsky, J. G., Murakawa, H., Kaneko, Y., Tokura, Y.

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Magnetic-field induced competition of two multiferroic orders in a triangular-lattice helimagnet MnI2 by Kurumaji, T, Seki, S, Ishiwata, S, Murakawa, H, Tokunaga, Y, Kaneko, Y, Tokura, Y

“…Magnetic and dielectric properties with varying magnitude and direction of magnetic-field H have been investigated for a triangular-lattice helimagnet MnI_{2}…”
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Dynamics of multiferroic domain wall in spin-cycloidal ferroelectric DyMnO3 by Kagawa, F, Mochizuki, M, Onose, Y, Murakawa, H, Kaneko, Y, Furukawa, N, Tokura, Y

“…We report the dielectric dispersion of the giant magnetocapacitance (GMC) in multiferroic DyMnO3 over a wide frequency range. The GMC is found to be…”
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Limits of validity of the Rashba model in BiTeI: High-field magneto-optical study by Bordács, S., Orlita, M., Šikula, M., Murakawa, H., Tokura, Y.

“…It was recently shown that BiTeI, a semiconductor with polar crystal structure, possesses a giant spin splitting of electrons, which has been interpreted in…”
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Enhanced infrared magneto-optical response of the nonmagnetic semiconductor BiTeI driven by bulk Rashba splitting by Demkó, L, Schober, G A H, Kocsis, V, Bahramy, M S, Murakawa, H, Lee, J S, Kézsmárki, I, Arita, R, Nagaosa, N, Tokura, Y

“…We study the magneto-optical (MO) response of the polar semiconductor BiTeI with giant bulk Rashba spin splitting at various carrier densities. Despite being…”
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Electrochemical synthesis of phthalocyanine–molecular mixed crystals in dilute solution by Ishii, R., Murakawa, H., Nishi, M., Matsuda, M., Sakai, H., Hanasaki, N.

“…•Synthesizing a molecular mixed crystal by electrochemical method in dilute solution.•Controlling precisely the composition ratio of a molecular mixed…”
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Element dependence of local disorder in medium-entropy alloy CrCoNi by Hanasaki, N., Oda, M., Niitsu, K., Ehara, K., Murakawa, H., Sakai, H., Nitani, H., Abe, H., Sagayama, H., Uetsuka, H., Karube, T., Inui, H.

“…The medium-entropy alloy CrCoNi is known to have exceptional mechanical properties. To clarify its local structure, we performed extended x-ray absorption fine…”
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Prediction and measurement of welding distortion of a spherical structure assembled from multi thin plates by Wang, Jiangchao, Ma, Ninshu, Murakawa, H., Teng, Bugang, Yuan, Shijian

“…► FEM can predict welding distortion and investigate mechanism. ► Welding distortion is measured at different positions of a spherical welded structure. ►…”
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Magnetic structure of the noncentrosymmetric magnet Sr2MnSi2O7 through irreducible representation and magnetic space group analyses by Nambu, Y., Kawamata, M., Pang, X., Murakawa, H., Avdeev, M., Kimura, H., Masuda, H., Hanasaki, N., Onose, Y.

“…Magnetic structures of the noncentrosymmetric magnet Sr2MnSi2O7 were examined through neutron diffraction for powder and single‐crystalline samples, as well as…”
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