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Journal Articles

Acoustic ferromagnetic resonance and spin pumping induced by surface acoustic waves

Puebla, J.*; Xu, M.*; Rana, B.*; Yamamoto, Kei; Maekawa, Sadamichi*; Otani, Yoshichika*

Journal of Physics D; Applied Physics, 53(26), p.264002_1 - 264002_7, 2020/06

 Times Cited Count:1 Percentile:100(Physics, Applied)

Journal Articles

Total-reflection high-energy positron diffraction (TRHEPD) for structure determination of the topmost and immediate sub-surface atomic layers

Fukaya, Yuki; Kawasuso, Atsuo*; Ichimiya, Ayahiko*; Hyodo, Toshio*

Journal of Physics D; Applied Physics, 52(1), p.013002_1 - 013002_19, 2019/01

 Times Cited Count:2 Percentile:71.36(Physics, Applied)

no abstracts in English

Journal Articles

Spin caloric effects in antiferromagnets assisted by an external spin current

Gomonay, O.*; Yamamoto, Kei; Sinova, J.*

Journal of Physics D; Applied Physics, 51(26), p.264004_1 - 264004_9, 2018/07

 Times Cited Count:4 Percentile:58.39(Physics, Applied)

Searching for novel spin caloric effects in antiferromagnets we study the properties of thermally activated magnons in the presence of an external spin current and temperature gradient. We predict the spin Peltier effect - generation of a heat flux by spin accumulation - in an antiferromagnetic insulator with cubic or uniaxial magnetic symmetry. This effect is related with spin-current induced splitting of the relaxation times of the magnons with opposite spin direction. We show that the Peltier effect can trigger antiferromagnetic domain wall motion with a force whose value grows with the temperature of a sample. We also demonstrate that the external spin current can induce the magnon spin Seebeck effect.

Journal Articles

Mn$$_{2}$$VAl Heusler alloy thin films; Appearance of antiferromagnetism and exchange bias in a layered structure with Fe

Tsuchiya, Tomoki*; Kobayashi, Ryota*; Kubota, Takahide*; Saito, Kotaro*; Ono, Kanta*; Ohara, Takashi; Nakao, Akiko*; Takanashi, Koki*

Journal of Physics D; Applied Physics, 51(6), p.065001_1 - 065001_7, 2018/02

 Times Cited Count:2 Percentile:70.63(Physics, Applied)

Journal Articles

Laser micro-processing as a tool for constructing insulator-based magnonic crystal

Daimon, Shunsuke*; Iguchi, Ryo*; Uchida, Kenichi*; Saito, Eiji

Journal of Physics D; Applied Physics, 48(16), p.164014_1 - 164014_4, 2015/04

 Times Cited Count:4 Percentile:79.31(Physics, Applied)

Journal Articles

Influence of interface condition on spin-Seebeck effects

Qiu, Z.*; Hou, D.*; Uchida, Kenichi*; Saito, Eiji

Journal of Physics D; Applied Physics, 48(16), p.164013_1 - 164013_5, 2015/04

 Times Cited Count:31 Percentile:13.52(Physics, Applied)

Journal Articles

Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet platinum bilayers

Schreier, M.*; Bauer, G. E. W.*; Vasyuchka, V.*; Flipse, J.*; Uchida, Kenichi*; Lotze, J.*; Lauer, V.*; Chumak, A.*; Serga, A.*; Daimon, Shunsuke*; et al.

Journal of Physics D; Applied Physics, 48(2), p.025001_1 - 025001_5, 2015/01

 Times Cited Count:42 Percentile:8.93(Physics, Applied)

Journal Articles

Capacitance transient study of a bistable deep level in e$$^{-}$$-Irradiated n-type 4H-SiC

Beyer, F. C.*; Hemmingsson, C. G.*; Pedersen, H.*; Henry, A.*; Isoya, Junichi*; Morishita, Norio*; Oshima, Takeshi; Janz$'e$n, E.*

Journal of Physics D; Applied Physics, 45(45), p.455301_1 - 455301_7, 2012/11

 Times Cited Count:8 Percentile:59.13(Physics, Applied)

Journal Articles

Single-shot observation of growing streamers using an ultrafast camera

Takahashi, Eiichi*; Kato, Susumu*; Furutani, Hirohide*; Sasaki, Akira; Kishimoto, Yasuaki*; Takada, Kenji*; Matsumura, Satoshi*; Sasaki, Hiroyasu*

Journal of Physics D; Applied Physics, 44(30), p.302001_1 - 302001_4, 2011/08

 Times Cited Count:5 Percentile:72.48(Physics, Applied)

A recently developed ultrafast camera that can acquire $$10^8$$ frames per second was used to investigate positive streamer discharge. It enabled single-shot evaluation of streamer evolution without the need to consider shot-to-shot reproducibility. This camera was used to investigate streamers in argon. Growing branches, the transition when a streamer forms a return stroke, and related phenomena were clearly observed.

Journal Articles

Controlling branching in streamer discharge by laser background ionization

Takahashi, Eiichi*; Kato, Susumu*; Sasaki, Akira; Kishimoto, Yasuaki*; Furutani, Hirohide*

Journal of Physics D; Applied Physics, 44(7), p.075204_1 - 075204_6, 2011/02

 Times Cited Count:15 Percentile:39.63(Physics, Applied)

Positive streamer branching in atmospheric argon gas was controlled by a KrF laser irradiation. This laser irradiation changes the amount of background ionization before the streamer discharge. Initial electron density formed by the KrF laser was evaluated by measuring ionization current. Characteristic "feather like" branching structure was observed and was suppressed only for the irradiated region. The threshold of ionization density which can influence to the branching was evaluated to be 5$$times$$10$$^{5}$$/cm$$^{3}$$. This suppression behavior was explained by the relation between a size of avalanche head and mean initial electron distance. These experimental results support the origin of the feather like structure comes from the branching model of Loeb-Meek that is probabilistic merging of individual avalanches.

Journal Articles

Simulation and experiments of the laser induced breakdown of air for femtosecond to nanosecond order pulses

Koga, J. K.; Moribayashi, Kengo; Fukuda, Yuji; Bulanov, S. V.; Sagisaka, Akito; Ogura, Koichi; Daido, Hiroyuki; Yamagiwa, Mitsuru; Kimura, Toyoaki*; Fujikawa, Taketoshi*; et al.

Journal of Physics D; Applied Physics, 43(2), p.025204_1 - 025204_15, 2010/01

 Times Cited Count:10 Percentile:54.63(Physics, Applied)

Journal Articles

Oxidation of xylene and its irradiation byproducts using an electron-beam irradiating a $$gamma$$-Al$$_{2}$$O$$_{3}$$ bed

Hakoda, Teruyuki; Matsumoto, Kanae*; Mizuno, Akira*; Hirota, Koichi

Journal of Physics D; Applied Physics, 41(15), p.155202_1 - 155202_7, 2008/08

 Times Cited Count:2 Percentile:88.91(Physics, Applied)

The oxidation of xylene and its irradiation byproducts in air using a $$gamma$$-Al$$_{2}$$O$$_{3}$$ bed was studied under electron-beam irradiation to enhance the decomposition of volatile organic compounds in ventilation gases emitted from paint factories. The use of the $$gamma$$-Al$$_{2}$$O$$_{3}$$ bed enhanced the oxidation of the irradiation byproducts to CO$$_{2}$$. Furthermore, the oxidation of the byproducts was accelerated by the placement of the $$gamma$$-Al$$_{2}$$O$$_{3}$$ bed in an irradiation space, because of the interaction of primary electrons with the surface of $$gamma$$-Al$$_{2}$$O$$_{3}$$ pellets. This combined oxidation process enabled a reduction in the energy consumption for non-toxic CO$$_{2}$$ formation, and improved the selectivity of CO$$_{2}$$ production.

Journal Articles

Existence and origin of compensation layer thickness in Tb$$_{20}$$Co$$_{80}$$/Pd multilayered films

Tanaka, Masahito*; Asahi, Toru*; Agui, Akane; Mizumaki, Masaichiro*; Sayama, Junichi*; Osaka, Tetsuya*

Journal of Physics D; Applied Physics, 41(5), p.055003_1 - 055003_4, 2008/03

 Times Cited Count:4 Percentile:79.08(Physics, Applied)

no abstracts in English

Journal Articles

Study on N$$_{2}$$-added and B-doped effect in Co/Pd multilayered films using soft X-ray absorption and magnetic circular dichroism

Agui, Akane; Asahi, Toru*; Sayama, Junichi*; Kawaji, Jun*; Mizumaki, Masaichiro*; Tanaka, Masahito*; Osaka, Tetsuya*

Journal of Physics D; Applied Physics, 39(14), p.2881 - 2885, 2006/07

 Times Cited Count:1 Percentile:95.06(Physics, Applied)

no abstracts in English

Journal Articles

A Model for striation formation in ac PDP discharges

Muraoka, Katsunori*; Azumi, Masafumi; Suzuki, Keizo*; Yamagata, Yukihiko*; Yagi, Masatoshi*

Journal of Physics D; Applied Physics, 39(10), p.2135 - 2139, 2006/05

 Times Cited Count:5 Percentile:77.23(Physics, Applied)

A model is presented to explain the mechanism of striation formation in ac plasma display panel discharges. A simple Monte Carlo simulation code follows the electron motions in such discharges and features of striations obtained by the simulation are consistent with experimental results. The model suggests the indirect measurement of electric field in a micro-discharges from the space pich of striations.

Journal Articles

Decomposition of gas-phase diphenylether at 473 K by electron beam generated plasma

Kim, H.*; Hakoda, Teruyuki; Kojima, Takuji

Journal of Physics D; Applied Physics, 36(5), p.473 - 481, 2003/03

 Times Cited Count:6 Percentile:70.04(Physics, Applied)

no abstracts in English

Journal Articles

Morphology evolution of thin Ni film on MgO(100) substrate

Lin, C.; Xu, Y. H.; Naramoto, Hiroshi; Wei, P.; Kitazawa, Shinichi; Narumi, Kazumasa

Journal of Physics D; Applied Physics, 35(15), p.1864 - 1866, 2002/08

 Times Cited Count:8 Percentile:63.15(Physics, Applied)

no abstracts in English

Journal Articles

X-ray and fourier transformed infrared investigation of $$beta$$-SiC growth by ion Implantation

Zhang, Z.; Narumi, Kazumasa; Naramoto, Hiroshi; Yamamoto, Shunya; Miyashita, Atsumi

Journal of Physics D; Applied Physics, 32(17), p.2236 - 2240, 1999/09

 Times Cited Count:14 Percentile:42.49(Physics, Applied)

no abstracts in English

Journal Articles

MeV ion generation by an ultra-intense short-pulse laser; Application to positron emitting radionuclide production

Yamagiwa, Mitsuru; Koga, J. K.

Journal of Physics D; Applied Physics, 32(19), p.2526 - 2528, 1999/00

 Times Cited Count:17 Percentile:37.05(Physics, Applied)

no abstracts in English

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