Physical Properties of Actinoid compounds explored by ultrasonic measurements

• Project/Area Number: 22654037
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Iwate University
• Principal Investigator: YOSHIZAWA Masahito 岩手大学, 工学研究科, 教授 (30220619)
• Co-Investigator(Renkei-kenkyūsha): HAGA Yoshinori (独)日本原子力研究開発機構, 先端基礎研究センター, 主任研究員 (90354901) ; HONMA Yoshiya 東北大学, 金属材料研究所, 助教 (00260448)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,080,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥480,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,000,000 (Direct Cost: ¥1,000,000)
• Keywords: ウラン化合物 / 超音波物性 / 低温 / 強磁場 / 超音波測定 / パルス磁場 / 量子臨界点 / 超ウラン化合物 / 多極子秩序

Research Abstract

We have investigated the elastic properties of UR_<u2>Si_2 by using ultrasonic measurements in the pulsed magnetic field. The elastic constant C_E=(C_<11>-C_<12>)/2 shows characteristic softening towards low temperatures as a function of temperature. The softening disappears beyond 36 T of the quantum critical point in this system. It is very similar to that of C_<66> in iron-based superconductor Ba(Fe_<1-x>Co_x)2A_<s2>. This fact suggests strongly that C_E is correlated with the formation of hidden order.

Research Products

• [Journal Article] High-Field Phase Diagram of SmRu4P12 Determined by Ultrasonic Measurements in Pulsed Magnetic Field up to 55 T (2013)
  • Author(s): M. Yoshizawa
  • Journal Title: J. Phys. Soc. Jpn. Volume: 82 Issue: 3 Pages: 033602-033606
  • DOI: 10.7566/jpsj.82.033602
  • Peer Reviewed
• [Journal Article] Elastic Anomalies Associated with superconducting phase transitions in Iron-based Superconductor Ba(Fe_(1-x)Co_x)_2As_2 (2012)
  • Author(s): A. Ismayil, R. Kamiya, R. Onodera, D. Kimura, T. Chiba, Y. Nakanishi, K. Kihou, M. Nakajima, C. H. Lee, A. Iyo, H. Eisaki, S. Uchida, and M. Yoshizawa
  • Journal Title: J. Phys.: Conf. Ser Volume: 400 Issue: 2 Pages: 022037-022037
  • DOI: 10.1088/1742-6596/400/2/022037
  • Peer Reviewed
• [Journal Article] 柔らかくなるほど高くなる超伝導体転移温度 ー鉄系超伝導体における超伝導と構造揺らぎの不思議な関係ー (2012)
  • Author(s): 吉澤正人
  • Journal Title: 固体物理 Volume: 47 Pages: 309-319
  • URL: http://www.agne.co.jp/kotaibutsuri/kota1047.htm#no557
• [Journal Article] Anomalous elastic behavior and its correlation with superconductivity in iron-based superconductor Ba(Fe_<1-x>Co_x)_2As_2 (2012)
  • Author(s): M. Yoshizawa, and S. Simayi
  • Journal Title: Modern Phys. Lett. B Volume: 26 Issue: 19 Pages: 1230011-1230011
  • DOI: 10.1142/s0217984912300116
  • Peer Reviewed
• [Journal Article] Large elastic anomalies and strong electron-lattice coupling in iron-based superconductor Ba(Fel-xCox) 2As2 (2012)
  • Author(s): M.Yoshizawa
  • Journal Title: Solid State Commun. Volume: 152 Issue: 8 Pages: 680-687
  • DOI: 10.1016/j.ssc.2011.12.006
  • Peer Reviewed
• [Journal Article] Structural quantum criticality and superconductivity in iron-based (2012)
  • Author(s): M.Yoshizawa, et al
  • Journal Title: J.Phys.Soc.Jpn. Volume: 81 Issue: 2 Pages: 24604-24604
  • DOI: 10.1143/jpsj.81.024604
  • Peer Reviewed
• [Journal Article] 柔らかくなるほど高くなる超伝導体転移温度 ー鉄系超伝導体における超伝導と 構造揺らぎの不思議な関係ー (2012)
  • Author(s): 吉澤正人
  • Journal Title: 固体物理 Volume: 47 Pages: 309-319
• [Journal Article] Elastic anomalies of TbB_4 in pulsed high magnetic fields (2011)
  • Author(s): T.K.Fujita, M.Yoshizawa, et al
  • Journal Title: J.Phys.Soc.Jpn. Volume: 80 Issue: Suppl.A Pages: SA084-SA084
  • DOI: 10.1143/jpsjs.80sa.sa084
  • Peer Reviewed
• [Journal Article] Effect of Carrier Doping on Physical Properties of A-Site Ordered Perovskite CaCu_3Ti_4O_<12> (2011)
  • Author(s): A.Ismayil, T.Nakamura, R.Kamiya, M.Nakamura, Y.Nakanishi, T.Naito, H.Fujishiro, T.Watanabe, G.Sawada, M.Toita, K.Takegahara, M.Yoshizawa
  • Journal Title: J.Phys, Soc.Jpn. Volume: 80
  • Peer Reviewed
• [Journal Article] Ultrasonic measurement of β-type pyrochlore oxide KOs_2O_6 (2010)
  • Author(s): R.Kamlya, M.Yoshizawa, Y.Nakanishi, M.Nakamural, J.Yamaura, Z.Hiroi
  • Journal Title: Journal of physics Conference Series Volume: 200
  • Peer Reviewed
• [Journal Article] Ultrasonic investigation close to quantum critical point in YbTr_2Zn_20 (Tr : Co, Rh, and Ir) (2010)
  • Author(s): Y Nakanishi, T.Kamiyama, K. Ito, M.Nakamura, Y.Saiga, M.Kosaka, Y.Uwatoko, M.Yoshizawa
  • Journal Title: Journal of Physics Conference Series Volume: 200
  • Peer Reviewed
• [Journal Article] Elastic and Thermal Transport Properties of(Pr_1-xSm_x)_0.7Ca_0.3CoO_3 at metal-insulator Transition (2010)
  • Author(s): T.Naito, H.Sasaki, H.Fujishiro, M.Yoshizawa
  • Journal Title: Journal of Physics Conference Series Volume: 200
  • Peer Reviewed
• [Journal Article] Ultrasonic investigation of a heavy termion compound YbAgGe (2010)
  • Author(s): Y.Nakanishi, R.Kashiwazaki, K.Deto, F.Shichinomiya, M.Nakamura, H.Kubo, K.Umeo, T.Onimaru, T.Takabatak, M.Yoshizawa
  • Journal Title: Journal of Physics Conference Series Volume: 273
  • Peer Reviewed
• [Presentation] URu_2Si_2のパルス磁場中の超音波測定 (2013)
  • Author(s): 吉澤正人, シャラムジャン・スマイ, 坂野幸平, 中西良樹, 三田村裕幸, 荒木幸治, 榊原敏郎, 金道浩一, 本間佳哉, 山本悦嗣, 松田琢磨, 芳賀芳範, 大貫惇睦
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学(広島県)
  • Year and Date: 2013-03-26
• [Presentation] URu2Si2のパルス磁場中の超音波測定 (2013)
  • Author(s): 吉澤正人
  • Organizer: 日本物理学会第６８回年次大会
  • Place of Presentation: 広島大学（広島県）
• [Presentation] 鉄系超伝導体Ba(Fe_<1-x>Co_x)_2As_2の比熱とグリュンナイゼン定数 (2012)
  • Author(s): 吉澤正人, 竹澤 遼, 坂野幸平, シャラムジャン・スマイ, 中村光輝, 中西良樹, 木方邦宏, 李 哲虎, 伊豫 彰, 永崎 洋, 中島正道, 内田慎一
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学(神奈川県)
  • Year and Date: 2012-09-20
• [Presentation] Anomalous elastic properties in the iron-based superconductors Ba(Fe_<1-x>Co_x)_2As_2 and Fe(Se1-xTex) (2012)
  • Author(s): M. Yoshizawa
  • Organizer: 2012 Materials & Mechanisms of Superconductivity Conference (M^2S 2012)
  • Place of Presentation: ワシントンDC(米国)(招待講演)
  • Year and Date: 2012-08-02
• [Presentation] Large elastic softening in heavy fermion superconductor Rh_<17>S_<15> (2012)
  • Author(s): S. Simayi, M. Yoshizawa, K. Sakano, Y. Nakanishi, R. Settai, Y. Onuki
  • Organizer: International conference on heavy electrons and novel quantum phases
  • Place of Presentation: 慶州(韓国)
  • Year and Date: 2012-07-07
• [Presentation] 鉄系超伝導体の弾性的性質 (2012)
  • Author(s): 吉澤正人
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学26pYD-7[シンポジウム講演](大阪府)
  • Year and Date: 2012-03-26
• [Presentation] 鉄系超伝導体の弾性的性質 (2012)
  • Author(s): 吉澤正人
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学26pYD-7(シンポジウム講演)
  • Year and Date: 2012-03-26
• [Presentation] Large elastic softening in heavy fermion superconductor Rh_<17>S_<15> (2012)
  • Author(s): Abdusalam Ismayil, 坂野幸平, 小関玄, 小関実, 中西良樹, 大貫惇睦, 摂待力生, 吉澤正人
  • Organizer: 本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学 25aYH-4(大阪府)
  • Year and Date: 2012-03-25
• [Presentation] 超音波測定における鉄系超伝導体Fe_<1.03>Te_<0.8>Se_<0.2>の弾性特性 (2012)
  • Author(s): 坂野幸平,中西良樹, 吉澤正人, 小鹿優太, 川田桂輔, 渡辺孝夫
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学25aPS-84(大阪府)
  • Year and Date: 2012-03-25
• [Presentation] 超音波測定における鉄系超伝導体Fe_<1.03>Te_<0.8>Se_<0.2>の弾性特性 (2012)
  • Author(s): 坂野幸平, 中西良樹, 吉澤正人, 小鹿優太, 川田桂輔, 渡辺孝夫
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学25aPS-84
  • Year and Date: 2012-03-25
• [Presentation] Large elastic softening in heavy fermion superconductor Rh_<17>S_<15> (2012)
  • Author(s): Abdusalam Ismayil, 坂野幸平, 小関玄, 小関実, 中西良樹, 大貫惇睦, 摂待力生, 吉澤正人
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学25aYH-4
  • Year and Date: 2012-03-25
• [Presentation] Anomalous elastic properties in the iron-based superconductors Ba(Fe1-xCox)2As2 and Fe(Se1-xTex) (2012)
  • Author(s): M. Yoshizawa
  • Organizer: 2012 Materials & Mechanisms of Superconductivity Conference (M2S 2012)
  • Place of Presentation: ワシントン（米国）
  • Invited
• [Presentation] 鉄系超伝導体Ba(Fe1-xCox)2As2の 比熱とグリュンナイゼン定数 (2012)
  • Author(s): 吉澤正人
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学（神奈川県）
• [Presentation] Elastic properties of iron-based superconductor (2011)
  • Author(s): M. Yoshizawa
  • Organizer: 24th International Symposium on Superconductivity (ISS2012)
  • Place of Presentation: Tokyo(東京都)[招待講演]
  • Year and Date: 2011-10-25
• [Presentation] Elastic properties of iron-based superconductor (2011)
  • Author(s): M.Yoshizawa
  • Organizer: 24th International Symposium on Superconductivity (ISS2012)
  • Place of Presentation: Tokyo(招待講演)
  • Year and Date: 2011-10-25
• [Presentation] Elastic anomalies of TbB_4 in pulsed high magnetic fields (2011)
  • Author(s): T.K.Fujita, M.Yoshizawa, R.Kamiya, H.Mitamura, T.Sakakibara, K.Kinodo, F.Iga
  • Organizer: International Conference on Heavy Electro ns 2010
  • Place of Presentation: Minami-Osawa Campus, Tokyo Metropolitan Universlty
  • Year and Date: 2011-09-19
• [Presentation] Detailed investigation of elastic properties of YbPd single crystal (2011)
  • Author(s): Y.Nakanishi, T.Kamiyama, M.Nakamura, M.Sugiya, ma, H.Wada, M.Yoshizawa
  • Organizer: International Conference on Heavy Electrons 2010
  • Place of Presentation: Minami-Osawa Campus, Tokyo Metropolitan Universlty
  • Year and Date: 2011-09-19
• [Presentation] Large elastic anomalie s in iron pnictide superconductor Ba(Fe_1-xCo_x)_2As_2 (2011)
  • Author(s): R.Kamiya, M.Yoshizawa, R.Onodera, Y.Nakanishi, K.Kihou, H.Eisaki, A.Iyo, C.H.Lee
  • Organizer: International Conference on Heavy Electrons 2010
  • Place of Presentation: Minami-Osawa Campus, Tokyo Metropolitan University
  • Year and Date: 2011-09-19
• [Presentation] Quantum Criticality and Superconductivity in Ba(Fe_<1-x>Co_x)_2As_2 Investigated by Ultrasonic Measurements (2011)
  • Author(s): M. Yoshizawa, D. Kimura, T. Chiba, A. Ismayil, Y. Nakanishi, K. Kihou, M. Nakajima, C. H. Lee, A. Iyo, H. Eisaki, and S. Uchida
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: Beijing International Convention Center (BICC)(中国)[招待講演]
  • Year and Date: 2011-08-16
• [Presentation] Quantum Criticality and Superconductivity in Ba(Fe_<1-x>Co_x)_2As_2 Investigated by Ultrasonic Measurements (2011)
  • Author(s): M.Yoshizawa, D.Kimura, T.Chiba, A.Ismayil, Y.Nakanishi, K.Kihou, M.Nakajima, C.H.Lee, A.Iyo, H.Eisaki, S.Uchida
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: Beijing International Convention Center (BICC)(招待講演)
  • Year and Date: 2011-08-16
• [Presentation] Ultrasonic measurements of iron pnictide superconductor Ba(Fe_<1-x>Co_x)_2As_2 single crystals (2011)
  • Author(s): D. Kimura, T. Chiba, R. Kamiya, A. Ismayil, Y. Nakanishi, M. Nakamura, M. Yoshizawa, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, M. Nakajima, S. Uchida
  • Organizer: International Workshop on Novel Superconductors and Super Materials 2011 (NS2011)
  • Place of Presentation: 日本科学未来館(東京都)
  • Year and Date: 2011-03-07
• [Presentation] Ultrasonic measurements of iron pnictide superconductor Ba(Fe_1-xCo_x)_2As_2 single crystals (2011)
  • Author(s): D.Kimura, T.Chiba, R.Kamiya, A.Ismayil, Y.Nakanishi, M.Nakamura, M.Yoshizawa, K..Kihou, C.H.Lee, A.Iyo, H.Eisaki, M.Nakajima, S.Uchida
  • Organizer: International Workshop on Novel Superconductors and Super Materials 2011 (NS2011)
  • Place of Presentation: 日本科学未来館 招待講演
  • Year and Date: 2011-03-07
• [Presentation] Large elastic softening and orbital order in iron-based superconductor Ba(Fe_<1-x>Co_x)_2As_2 (2011)
  • Author(s): M. Yoshizawa, D. kimura, T. Chiba, R. Kamiya, A. Ismayil, R. Onodera, Y. Nakanishi, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, M. Nakajima, S. Uchida
  • Organizer: International Workshop on Novel Superconductors and Super Materials 2011 (NS2011)(招待講演)
  • Place of Presentation: 日本科学未来館(東京都)
  • Year and Date: 2011-03-06
• [Presentation] Large elastic softening and orbital order in iron-based superconductor Ba(Fe_1-xCox)_2As2 (2011)
  • Author(s): M.Yoshizawa, D.kimura, T.Chiba, R.Kamiya, A.Ismayil, R.Onodera, Y.Nakanishi, K.Kihou， C.H.lee, A.Iyo, H.Eisali, M.Nakajima, S.Uchida
  • Organizer: International Workshop on Novel Superconductors and Super Materials 2011 (NS2011)
  • Place of Presentation: 日本科学未来館 招待講演
  • Year and Date: 2011-03-06
• [Presentation] SmRu_4P_<12>のパルス磁場中の弾性定数測定 (2010)
  • Author(s): 吉澤正人、七宮史崇、三田村裕幸、中西良樹、菅原仁、榊原俊郎、金道浩一、佐藤英行
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学(大阪府)
  • Year and Date: 2010-09-23
• [Presentation] YbAl_3C_3のパルス磁場中超音波測定 (2010)
  • Author(s): 七宮史崇、吉澤正人、三田村裕幸、中西良樹、小坂昌史、榊原俊郎、金道浩一
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学(大阪府)
  • Year and Date: 2010-09-23
• [Presentation] 価数揺動物質YbPdの静水圧力下超音波測定 (2010)
  • Author(s): 中西良樹、上山徹、出戸和久、柏崎礼子、七宮史崇、小関玄、小関実、吉澤正人、杉島正樹、光田暁、和田裕文
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-23
• [Presentation] YbAl_3C_3のパルス磁場中超音波測定 (2010)
  • Author(s): 七宮史崇、吉澤正人、三田村裕幸、中西良樹、小坂昌史、榊原俊郎、金道浩一
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-23
• [Presentation] SmRu_4P_12のパルス磁場中の弾性定数測定 (2010)
  • Author(s): 吉澤正人、七宮史崇、三田村裕幸、中西良樹、菅原仁、榊原俊郎、金道浩一、佐藤英行
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-23
• [Presentation] Elastic anomalies of TbB_4 in pulsed high magnetic fields (2010)
  • Author(s): T. K. Fujita, M. Yoshizawa, R. Kamiya, H. Mitamura, T. Sakakibara, K. Kinodo and F. Iga
  • Organizer: International Conference on Heavy Electrons 2010
  • Place of Presentation: Minami-Osawa Campus, Tokyo Metropolitan University(東京都)
  • Year and Date: 2010-09-19