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J. Phys. Soc. Jpn. 77 (2008) 033601 (4 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Letters

Direct Observation of Low-Energy Sm Phonon in SmRu4P12

Satoshi Tsutsui1, Hisao Kobayashi2,3, Daisuke Ishikawa4, John P. Sutter1, Alfred Q. R. Baron1,4, Takumi Hasegawa5, Norio Ogita5, Masayuki Udagawa5, Yoshitaka Yoda1,3, Hideya Onodera6, Daisuke Kikuchi7, Hitoshi Sugawara8, Chihiro Sekine9, Ichimin Shirotani9, and Hideyuki Sato7

1Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198
2Graduate School of Materials Science, University of Hyogo, Kamigori, Hyogo 678-1297
3CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012
4RIKEN, SPring-8, Sayo, Hyogo 679-5148
5Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashihiroshima, Hiroshima 739-8527
6Graduate School of Science, Tohoku University, Sendai 980-8578
7Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0937
8Faculty of Integrated Arts and Sciences, the University of Tokushima, Tokushima 770-8502
9Department of Electric and Electronic Engineering, Muroran Institute of Technology, Muroran, Hokkaido 050-8585

(Received August 6, 2007; Accepted January 23, 2008; Published March 10, 2008)

Measurements of S(Q,ω) of the filled skutterudite SmRu4P12 using inelastic x-ray scattering show a dispersionless mode at 9 meV. Meanwhile, the Sm partial phonon density of states measured by nuclear resonant inelastic scattering shows a strong peak at the same energy. The temperature dependence of the Sm phonon energy suggests that the Sm modes are anharmonic. The comparison of the experimental results in SmRu4P12 with the calculated ones in LaRu4P12 indicates the absence of any significant lattice instability due to 4f electrons. ©2008 The Physical Society of Japan

KEYWORDS: filled skutterudite, anharmonic phonon, phonon dispersion, phonon density of states, inelastic x-ray scattering
URL: http://jpsj.ipap.jp/link?JPSJ/77/033601/
DOI: 10.1143/JPSJ.77.033601


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References | Citing Articles (3)

  1. W. Jeitschko and D. Braun: Acta Crystallogr., Sect. B 33 (1977) 3401.
  2. R. P. Hermann, W. Schweika, O. Leupold, R. Rüffer, G. S. Nolas, F. Grandjean, and G. J. Long: Phys. Rev. B 72 (2005) 174301, [APS]and references therein.
  3. V. Keppens, D. Mandrus, B. C. Sales, B. C. Chakoumakos, P. Dai, R. Coldea, M. B. Maple, D. A. Gajewski, E. J. Freeman, and S. Bennington: Nature 395 (1998) 876[CrossRef].
  4. R. P. Hermann, R. Jin, W. Schweika, F. Grandjean, D. Mandrus, B. C. Sales, and G. J. Long: Phys. Rev. Lett. 90 (2003) 135505[APS].
  5. D. Cao, F. Bridges, P. Chesler, S. Bushart, E. D. Bauer, and M. B. Maple: Phys. Rev. B 70 (2004) 094109[APS].
  6. E. Matsuoka, S. Narazu, K. Hayashi, K. Umeo, and T. Takabatake: J. Phys. Soc. Jpn. 75 (2006) 014602[IPAP].
  7. G. J. Long, R. P. Hermann, F. Grandjean, E. E. Alp, W. Sturhahn, C. E. Johnson, D. E. Brown, O. Leupold, and R. Rüffer: Phys. Rev. B 71 (2005) 140302[APS].
  8. C. H. Lee, I. Hase, H. Sugawara, H. Yoshizawa, and H. Sato: J. Phys. Soc. Jpn. 75 (2006) 123602[IPAP].
  9. C. Sekine, T. Uchiumi, I. Shirotani, and T. Yagi: in Science and Technology on High Pressure, ed. M. H. Mangnani et al. (Univeristy Press, Hyderabad, India, 2000) p. 826.
  10. C. Sekine, T. Uchiumi, I. Shirotani, and T. Yagi: Phys. Rev. Lett. 79 (1997) 3218[APS].
  11. C. H. Lee, H. Matsuhata, H. Yamaguchi, C. Sekine, K. Kihou, T. Suzuki, T. Noro, and I. Shirotani: Phys. Rev. B 70 (2004) 153105[APS].
  12. H. Harima, K. Takegahara, K. Ueda, and S. H. Curnoe: Acta Phys. Pol. B 34 (2003) 1189.
  13. K. Iwasa, L. Hao, T. Hasegawa, T. Takagi, K. Horiuchi, Y. Mori, Y. Murakami, K. Kuwahara, M. Kohgi, H. Sugawara, S. R. Saha, Y. Aoki, and H. Sato: J. Phys. Soc. Jpn. 74 (2005) 1930[IPAP].
  14. S. Tsutsui, H. Kobayashi, A. Q. R. Baron, J. P. Sutter, Y. Yoda, H. Onodera, D. Kikuchi, H. Sugawara, H. Sato, C. Sekine, and I. Shirotani: J. Magn. Magn. Mater. 310 (2007) 241[CrossRef].
  15. M. Yoshizawa, Y. Nakanishi, M. Oikawa, C. Sekine, I. Shirotani, S. R. Saha, H. Sugawara, and H. Sato: J. Phys. Soc. Jpn. 74 (2005) 2141[IPAP].
  16. M. Seto, Y. Yoda, S. Kikuta, X. W. Zhang, and M. Ando: Phys. Rev. Lett. 61 (2000) 461[APS].
  17. S. Tsutsui, Y. Kobayashi, Y. Yoda, M. Seto, K. Indoh, and H. Onodera: J. Magn. Magn. Mater. 272–276 (2004) 199[CrossRef].
  18. N. Ogita, T. Kondo, T. Hasegawa, Y. Takasu, M. Udagawa, N. Takeda, K. Ishikawa, H. Sugawara, D. Kikuchi, H. Sato, C. Sekine, and I. Shirotani: Physica B 383 (2006) 128[CrossRef].
  19. S. Tsutsui, J. Umemura, H. Kobayashi, T. Tazaki, S. Nasu, Y. Kobayashi, Y. Yoda, H. Onodera, H. Sugawara, T. D. Matsuda, D. Kikuchi, H. Sato, C. Sekine, and I. Shirotani: Hyperfine Interactions 168 (2006) 1073.
  20. S. Tsutsui, H. Kobayashi, J. P. Sutter, H. Uchiyama, A. Q. R. Baron, Y. Yoda, D. Kikuchi, H. Sugawara, C. Sekine, I. Shirotani, A. Ochiai, and H. Sato: to be published in J. Phys. Soc. Jpn. Suppl.
  21. K. Iwasa, M. Kohgi, H. Sugawara, and H. Sato: Physica B 378–380 (2006) 194[CrossRef].
  22. C. Sekine, Y. Shimaya, I. Shirotani, and P. Haen: J. Phys. Soc. Jpn. 74 (2005) 3395[IPAP].
  23. A. Q. R. Baron, Y. Tanaka, S. Goto, K. Takeshita, T. Matsushita, and T. Ishikawa: J. Phys. Chem. Solids 61 (2000) 461[CrossRef].
  24. A. Q. R. Baron, J. P. Sutter, S. Tsutsui, H. Uchiyama, T. Masui, S. Tajima, R. Heid, and K.-P. Bohnen: to be published in J. Phys. Chem. Solids.
  25. M. Yoshizawa, Y. Nakanishi, T. Kumagai, M. Oikawa, C. Sekine, and I. Shirotani: J. Phys. Soc. Jpn. 73 (2004) 315[IPAP].
  26. The ABINIT package is a common project of the Universite Catholique de Louvain, Coring Incorporated, and other contributors [http://www.abinit.org/].
  27. Y. Takasu, T. Hasegawa, N. Ogita, M. Udagawa, M. A. Avila, K. Suekuni, I. Ishii, T. Suzuki, and T. Takabatake: Phys. Rev. B 74 (2006) 174303[APS].
  28. T. Takimoto: J. Phys. Soc. Jpn. 75 (2006) 34714[IPAP].
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