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Journal Articles

Hard X-ray photoelectron spectroscopy study of Pt/Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$

Kobata, Masaaki; Yoshii, Kenji; Fukuda, Tatsuo; Kawasaki, Ikuto; Okane, Tetsuo; Yamagami, Hiroshi; Yaita, Tsuyoshi; Harii, Kazuya; Ieda, Junichi; Okayasu, Satoru; et al.

JPS Conference Proceedings (Internet), 30, p.011192_1 - 011192_6, 2020/03

https://doi.org/10.7566/JPSCP.30.011192

High energy X-ray photoelectron spectroscopy (HAXPES) measurements were carried out for the Spin Seebeck system Pt/Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$(YIG). This system was found to show anomalous Hall effect, possible due to the formation of intermetallic compounds between Fe$$^{3+}$$ and Pt. To reveal this possibility, we have measured the Fe 1s photoelectron peaks by using HAXPES. It was found that the Fe ions consist of Fe$$^{3+}$$ in YIG and metallic Fe. The formation of the metallic state is consistent with the proposed origin of the anomalous Hall effect. Other spectra such as Pt 4f will be presented at the conference.

Journal Articles

Antiferromagnetic anisotropy determination by spin Hall magnetoresistance

Wang, H.*; Hou, D.*; Qiu, Z.*; Kikkawa, Takashi*; Saito, Eiji; Jin, X.*

Journal of Applied Physics, 122(8), p.083907_1 - 083907_6, 2017/08

https://doi.org/10.1063/1.4986372
 Times Cited Count：0 Percentile：100(Physics, Applied)

Journal Articles

Detection of induced paramagnetic moments in Pt on Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$ via X-ray magnetic circular dichroism

Kikkawa, Takashi*; Suzuki, Motohiro*; Okabayashi, Jun*; Uchida, Kenichi*; Kikuchi, Daisuke*; Qiu, Z.*; Saito, Eiji

Physical Review B, 95(21), p.214416_1 - 214416_7, 2017/06

https://doi.org/10.1103/PhysRevB.95.214416
 Times Cited Count：6 Percentile：55.89(Materials Science, Multidisciplinary)

Journal Articles

Temperature dependence of the spin Seebeck effect in [Fe$$_{3}$$O$$_{4}$$/Pt]n multilayers

Ramos, R.*; Kikkawa, Takashi*; Anad$'o$n, A.*; Lucas, I.*; Uchida, Kenichi*; Algarabel, P. A.*; Morell$'o$n, L.*; Aguirre, M. H.*; Saito, Eiji; Ibarra, M. R.*

AIP Advances (Internet), 7(5), p.055915_1 - 055915_7, 2017/05

https://doi.org/10.1063/1.4974060
 Times Cited Count：13 Percentile：25.14(Nanoscience & Nanotechnology)

Journal Articles

Gamma radiation resistance of spin Seebeck devices

Yagmur, A.*; Uchida, Kenichi*; Ihara, Kazuki*; Ioka, Ikuo; Kikkawa, Takashi*; Ono, Madoka*; Endo, Junichi*; Kashiwagi, Kimiaki*; Nakashima, Tetsuya*; Kirihara, Akihiro*; et al.

Applied Physics Letters, 109(24), p.243902_1 - 243902_4, 2016/12

https://doi.org/10.1063/1.4971976
 Times Cited Count：1 Percentile：91.96(Physics, Applied)

Thermoelectric devices based on the spin Seebeck effect (SSE) were irradiated with gamma ($$gamma$$) rays with the total dose of around 3$$times$$10$$^{5}$$ Gy in order to investigate the $$gamma$$-radiation resistance of the devices. To demonstrate this, Pt/Ni$$_{0.2}$$Zn$$_{0.3}$$Fe$$_{2.5}$$O$$_{4}$$/Glass and Pt/Bi$$_{0.1}$$Y$$_{2.9}$$Fe$$_{5}$$O$$_{12}$$/Gd$$_{3}$$Ga$$_{5}$$O$$_{12}$$ SSE devices were used. We confirmed that the thermoelectric, magnetic, and structural properties of the SSE devices are not affected by the $$gamma$$-ray irradiation. This result demonstrates that SSE devices are applicable to thermoelectric generation even in high radiation environments.

Journal Articles

Magnon polarons in the spin Seebeck effect

Kikkawa, Takashi*; Shen, K.*; Flebus, B.*; Duine, R. A.*; Uchida, Kenichi*; Qiu, Z.*; Bauer, G. E. W.*; Saito, Eiji

Physical Review Letters, 117(20), p.207203_1 - 207203_6, 2016/11

https://doi.org/10.1103/PhysRevLett.117.207203
 Times Cited Count：58 Percentile：3.98(Physics, Multidisciplinary)

Journal Articles

Thermoelectric generation based on spin Seebeck effects

Uchida, Kenichi*; Adachi, Hiroto; Kikkawa, Takashi*; Kirihara, Akihiro*; Ishida, Masahiko*; Yorozu, Shinichi*; Maekawa, Sadamichi; Saito, Eiji*

Proceedings of the IEEE, 104(10), p.1946 - 1973, 2016/10

https://doi.org/10.1109/JPROC.2016.2535167
 Times Cited Count：117 Percentile：0.7(Engineering, Electrical & Electronic)

Journal Articles

Spin-current-driven thermoelectric generation based on interfacial spin-orbit coupling

Yagmur, A.*; Karube, Shutaro*; Uchida, Kenichi*; Kondo, Kota*; Iguchi, Ryo*; Kikkawa, Takashi*; Otani, Yoshichika*; Saito, Eiji

Applied Physics Letters, 108(24), p.242409_1 - 242409_4, 2016/06

https://doi.org/10.1063/1.4953879
 Times Cited Count：1 Percentile：91.96(Physics, Applied)

Journal Articles

Complete suppression of longitudinal spin Seebeck effect by frozen magnetization dynamics in Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$

Kikkawa, Takashi*; Uchida, Kenichi*; Daimon, Shunsuke*; Saito, Eiji

Journal of the Physical Society of Japan, 85(6), p.065003_1 - 065003_2, 2016/06

https://doi.org/10.7566/JPSJ.85.065003
 Times Cited Count：6 Percentile：42.98(Physics, Multidisciplinary)

Journal Articles

Unconventional scaling and significant enhancement of the spin Seebeck effect in multilayers

Ramos, R.*; Kikkawa, Takashi*; Aguirre, M.*; Lucas, I.*; Anad$'o$n, A.*; Oyake, Takafumi*; Uchida, Kenichi*; Adachi, Hiroto; Shiomi, Junichiro*; Algarabel, P. A.*; et al.

Physical Review B, 92(22), p.220407_1 - 220407_5, 2015/12

https://doi.org/10.1103/PhysRevB.92.220407
 Times Cited Count：48 Percentile：8.17(Materials Science, Multidisciplinary)

Journal Articles

Enhancement of anomalous Nernst effects in metallic multilayers free from proximity-induced magnetism

Uchida, Kenichi*; Kikkawa, Takashi*; Seki, Takeshi*; Oyake, Takafumi*; Shiomi, Junichiro*; Qiu, Z.*; Takanashi, Koki*; Saito, Eiji

Physical Review B, 92(9), p.094414_1 - 094414_6, 2015/09

https://doi.org/10.1103/PhysRevB.92.094414
 Times Cited Count：46 Percentile：8.44(Materials Science, Multidisciplinary)

Journal Articles

All-oxide spin Seebeck effects

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

Applied Physics Express, 8(8), p.083001_1 - 083001_3, 2015/08

https://doi.org/10.7567/APEX.8.083001
 Times Cited Count：19 Percentile：25.51(Physics, Applied)

Journal Articles

Observation of inverse spin Hall effect in ferromagnetic FePt alloys using spin Seebeck effect

Seki, Takeshi*; Uchida, Kenichi*; Kikkawa, Takashi*; Qiu, Z.*; Saito, Eiji; Takanashi, Koki*

Applied Physics Letters, 107(9), p.092401_1 - 092401_4, 2015/08

https://doi.org/10.1063/1.4929691
 Times Cited Count：24 Percentile：19.6(Physics, Applied)

Journal Articles

Critical suppression of spin Seebeck effect by magnetic fields

Kikkawa, Takashi*; Uchida, Kenichi*; Daimon, Shunsuke*; Qiu, Z.*; Shiomi, Yuki*; Saito, Eiji

Physical Review B, 92(6), p.064413_1 - 064413_9, 2015/08

https://doi.org/10.1103/PhysRevB.92.064413
 Times Cited Count：114 Percentile：2.2(Materials Science, Multidisciplinary)

Journal Articles

Anomalous hall effect with giant hysteresis loop in La$$_{0.67}$$Sr$$_{0.33}$$MnO$$_3$$|SrRuO$$_3$$ superlattices

Shiomi, Yuki*; Handa, Yu*; Kikkawa, Takashi*; Saito, Eiji

Physical Review B, 92(2), p.024418_1 - 024418_4, 2015/07

https://doi.org/10.1103/PhysRevB.92.024418
 Times Cited Count：3 Percentile：79.61(Materials Science, Multidisciplinary)

Journal Articles

Intrinsic surface magnetic anisotropy in Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$ as the origin of low-magnetic-field behavior of the spin Seebeck effect

Uchida, Kenichi*; Oe, Junichiro*; Kikkawa, Takashi*; Daimon, Shunsuke*; Hou, D.*; Qiu, Z.*; Saito, Eiji

Physical Review B, 92(1), p.014415_1 - 014415_8, 2015/07

https://doi.org/10.1103/PhysRevB.92.014415
 Times Cited Count：22 Percentile：22.87(Materials Science, Multidisciplinary)

Journal Articles

Transverse thermoelectric effect in La$$_{0.67}$$Sr$$_{0.33}$$MnO$$_3$$|SrRuO$$_3$$ superlattices

Shiomi, Yuki*; Handa, Yu*; Kikkawa, Takashi*; Saito, Eiji

Applied Physics Letters, 106(23), p.232403_1 - 232403_4, 2015/06

https://doi.org/10.1063/1.4922294
 Times Cited Count：24 Percentile：19.6(Physics, Applied)

Journal Articles

Observation of longitudinal spin-Seebeck effect in cobalt-ferrite epitaxial thin films

Niizeki, Tomohiko*; Kikkawa, Takashi*; Uchida, Kenichi*; Oka, Mineto*; Suzuki, Kazuya*; Yanagihara, Hideo*; Kita, Eiji*; Saito, Eiji

AIP Advances (Internet), 5(5), p.053603_1 - 053603_6, 2015/05

https://doi.org/10.1063/1.4916978
 Times Cited Count：29 Percentile：16.33(Nanoscience & Nanotechnology)

Journal Articles

Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements

Sola, A.*; Kuepferling, M.*; Basso, V.*; Pasquale, M.*; Kikkawa, Takashi*; Uchida, Kenichi*; Saito, Eiji

Journal of Applied Physics, 117(17), p.17C510_1 - 17C510_4, 2015/05

https://doi.org/10.1063/1.4916762
 Times Cited Count：25 Percentile：19.6(Physics, Applied)

Journal Articles

Spin Hall magnetoresistance at high temperatures

Uchida, Kenichi*; Qiu, Z.*; Kikkawa, Takashi*; Iguchi, Ryo*; Saito, Eiji

Applied Physics Letters, 106(5), p.052405_1 - 052405_5, 2015/02

https://doi.org/10.1063/1.4907546
 Times Cited Count：13 Percentile：37.3(Physics, Applied)

36 (Records 1-20 displayed on this page)