九州大学 研究者情報
論文一覧
山田 和正(やまだ かずまさ) データ更新日:2021.06.22

助教 /  理学研究院 物理学部門 物性物理学


原著論文
1. Kazumasa Yamada, Bunju Shinozaki, Takashi Narikiyo, Yousuke Takigawa, Norihiro Kuroda, Toru Bando, Hiroaki Nakamura, Temperature dependence of mobility of conducting polymer polyaniline with secondary dopant, Synthetic Metals, https://doi.org/10.1016/j.synthmet.2018.11.019, 247, 124-130, 2019.01, The conductivity σ and carrier density n of the conducting polymer polyaniline were investigated by changing the concentration x of a secondary dopant, meta-cresol. We found that σ changes by four orders of magnitude within the x-range of 1–10%, while n, as estimated from the Hall measurements, shows a weak dependence on x in the region of 2% < x < 50%. These results suggest that σ can be enhanced by the change in the mobility μ. We analyzed the temperature dependence of μ by not only the combination of two different types of scattering mechanism, but also by the polaron hopping model. The experimental data of μ(T) can be explained well by the latter model with reasonable fitting parameter values of a small-polaron binding energy and a longitudinal optical phonon frequency..
2. K. Yamada, B. Shinozaki, K. Yano and H. Nakamura., The temperature dependence of Hall mobility of the oxide thin film In2O3-ZnO, Journal of Physics: Conference Series, 10.1088/1742-6596/400/4/042069, 400, 042069, 2012.12.
3. Shinozaki B, Ezaki S, Hidaka K, Makise K, Asano T, Kokubo N, Yamada K, Yano K and Nakamura, Depression of positive magneto-conductance due to anti-weak localization effect in annealed In2O3-ZnO thick films, J. Phys.: Conf. Ser. , 10.1088/1742-6596/400/4/042052, 400, 042052, 2012.12.
4. K. Yamada, M. Stopa, T. Hatano, T. Yamaguchi, T. Ota, Y. Tokura, S. Tarucha , Geometric blockade in a quantum dot coupled to two-dimensional and three-dimensional electron gases
, Physical Review B Rapid Communication, 84, 201303(R) , 2011.11.
5. B. Shinozaki, S. Takada, N. Kokubo, K. Makise, K. Mitsuishi, K. Yamada, K. Yano, H. Nakamura , Superconducting characteristics and microstructure of polycrystalline Zn-doped In 2O 3 films, Physica C, 10.1016/j.physc.2011.05.036, 471, 21, 717-720, 2011.12.
6. K. Yamada, T. Yamaguchi, N. Kokubo, B. Shinokazi, K. Yano, H. Nakamura, The Hall effect measurement in the high resistance In2O3-ZnO polycrystalline films, Transactions of the materials research society of Japan, 34, 4, 755, 2009.12.
7. B. Shinozaki,N. Kokubo, K. Makise, S. Takada, T. Yamaguti, S. Ogura, K. Yamada, K. Yano, K. Terai, S. Tomai, H. Nakamura, Annealing effect on the superconductivity of In2O3-ZnO thin films,, Physica C
, 469, 956-959, 2009.10.
8. B.Shinozaki, N. Kokubo, S.Takada, K.Yamada, K.Makise, K.Yano, K.Inoue, and H.Nakamura, Superconductivity in In2O3-ZnO crystalline films,, J.Phys. Conference Seri., 150 , 052234, 2009.09.
9. K. Makise, N. Kokubo, S. Takada, T. Yamaguti, S.Ogura, K. Yamada, B. Shinozaki, K. Yano, K. Inoue, and H. Nakamura, Superconductivity in transparent Zinc-doped In2O3 films having low carrier density, Sci. Tech. Adv. Mater., http://dx.doi.org/10.1088/1468-6996/9/4/044208, 9, 4, 044208, 2008.05.
10. Kazumasa Yamada, Shigeru kaku, Mizuki Yamato, Daisuke Matsumoto and Yukio Watanabe, The Relaxation of Reproducible Resistance Modulations In a Au/(Pb,La)(Zr,Ti)O3/(La,Sr)2CuO4 Thin Film in high temperatures, Ferroelectrics, 2007.02.
11. Kazumasa Yamada, Shigeru kaku, Mizuki Yamato, Daisuke Matsumoto and Yukio Watanabe, The Temperature Dependence Of Relaxation Of Resistive Memory Effect In a Metal / PLZT Thin Film, Ferroelectrics, Vol. 347, pp. 137, 2007.01.
12. Sigeru Kaku, Satoshi Miyauchi, Kazu Yamada, Daisuke Matsumoto and Yukio Watanabe, A Nonohmic Positive Temperature Coefficient of Resistance in Lattice-matched and Lattice-Mismatched Epitaxial BaTiO3 Films, Ferroelectrics, vol. 335, pp. 159, 2006.01.
13. K.Yamada, M.Stopa, Y. Tokura, T.Hatano, T.Ota, T.Yamaguchi, and S.Tarucha, Tunnel-coupling blockade in vertical/lateral hybrid dot to study many-body states for electron number N=1,2 and 3, AIP Proceedings, Part A 785, 2005.01.
14. Y. Nishi, P. Masksym, D. G. Austing, K. Yamada, H. Aoki, and S.Tarucha, Configuration Transiton between MDD and Spin-Polarized Pentagonal Molecules via Lower Spin States in a Five-Electron Quantum Dot, AIP Proceedings, Part A pp.649, 2005.01.
15. T, Ota, M. Stpa, M. Rontani, T. Hatano, K. Yamada, S. Tarucha, Y. Nakata, H. Z. Song, T. Miyazawa, T.Usuki, M.Takatsu, and N. Yokoyama, Spin States in a Single InAs Quantum Dot Moecule Probed by Single-Electron Tunneling Spectroscopy, AIP Proceedings, Part A 643, 2005.01.
16. T. Hatano, M. Stopa, T. Yamaguchi, T. Ota, K. Yamada, and S. Tarucha, Electron-spin and –orbital dependence of tunnel coupling in laterally coupled double vertical dots, Phys. Rev. Lett., Vol.93 No.6 pp.066806, 2004.01.
17. Kazumada Yamada, Bunjyu Shinozaki, and Takashi Kawaguti, Weak localization and magnetoconductance in percolative superconducing aluminum films, Phys. Rev. B, 10.1103/PhysRevB.70.144503, 70, 14, vol.70, pp.144503, 2004.01.
18. K.Yamada, M.Stopa, T.Hatano, T.Yamaguchi and S.Tarucha, Variation of co-tunneling and Kondo effects by control of coupling strength between a vertical dot and a two-dimensional electron gas, Superlattice and Microstructures, Vol 34/3-6 pp.185-189, 2003.01.
19. M.Stopa, T. Hatano, T. Ota, K. Yamada and S. Tarucha, Bond-bending model for NDR in transport through single molecules, Superlattice and Microstructures, Vol 34/3-6 pp.439-442, 2003.01.
20. T. Ota, M. Stopa, T. Hatano, K. Yamada, S. Tarucha, H. Z. Song, Y. Nakata, T. Miyazawa, T. Ohsima, and N. Yokoyama, Molecular states observed in a single pair of strongly coupled self-assembled InAs quantum dots, Superlattice and Microstructures, Vol 34/3-6 pp.159-164, 2003.01.
21. T. Hatano, M. Stopa, T. Yamaguchi, T. Ota, K. Yamada, and S. Tarucha, Delocalization energy probed by asymmetry of Coulomb diamond in double dot system, Superlattice and Microstructures, Vol 34/3-6 pp.191-194, 2003.01.
22. K. Yamada, B. Shinozaki and T. Kawaguti, Percolation and weak localization in thin discontinuous aluminum films, Physica E, 10.1016/S1386-9477(02)01020-2, 18, 1-3, 286-287, Vol.18, pp.286, 2003.01.
23. B. Shinozaki, K. Sakae, S. Inada, K. Yamada and T. Kawaguti, Investigations of the magnetic transport properties of normal metallic films under the non-uniform magnetic field, Physica E, 10.1016/S1386-9477(02)00990-6, 18, 1-3, 233-234, Vol.18, pp.363, 2003.01.
24. K. Yamada, H. Fujiki, B. Shinozaki, T. Kawaguti, Superconducting properties in granular aluminum films near percolation threshold, Physica C, 10.1016/S0921-4534(00)01768-8, 355, 1-2, 147-155, Vol.355 pp 147, 2001.01.
25. H. Fujiki, K. Yamada, B. Shinozaki, T. Kawaguti, F. Ichikawa,T. Fukami, T. Aomine, Superconducting fluctuation, localization and electron-electron interaction corrections to the magnetoconductivity in three-dimensional aluminum films, Physica C, 10.1016/S0921-4534(98)00630-3, 311, 1-2, 58-64, vol.311, no.1-2, 1, 1999.01.
26. B. Shinozaki, K. Omata, K. Yamada, T. Kawaguti, Y. Fujimori, T. Aomine, Electrical transport and superconducting properties of thin tin-copper films, Physica C, 10.1016/S0921-4534(97)01807-8, 296, 1-2, 49-56, vol.296, no.1-2, 10, 1998.01.

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