Study on the ordering states of highly correlated electron systems by ultrasonic measurements in pulsed magnetic field
Project/Area Number |
25400350
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | Iwate University |
Principal Investigator |
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 超音波測定 / 強相関伝導系 / パルス磁場 / ウラン化合物 / 低温 |
Outline of Final Research Achievements |
We have investigated exotic ordering of URu2Si2 and URhGe by ultrasonic measurements in pulsed magnetic field. We focus our attention on the aspect of quantum criticality appearing in magnetic field. URu2Si2 shows very similar behavior of structural quantum criticality in CE=(C11-C12)/2, which was found in iron-based superconductor. Similar structural quantum criticality was also found in URhGe. However, Jahn-Teller energy EJT of Uranium compounds is order of 1 K, while that of the iron-based superconductor is about 50K. This suggests strongly a magnetic origin of quantum critical point in URu2Si2. In addition to CE, URu2Si2 shows remarkable elastic softening in C66 in high magnetic fields, which suggests different type of orthorhombic distortion below the hidden order temperature THO, and participation of Eu symmetry among various proposed candidates. Such behavior would be a common feature near quantum critical point in strongly correlated electron systems.
|
Report
(4 results)
Research Products
(33 results)
-
-
-
-
-
-
-
-
-
[Journal Article] Strange Inter-Layer Properties of Ba(Fe1xCox)2As2 Appearing in Ultrasonic Measurements2013
Author(s)
Shalamujiang SIMAYI, Kouhei SAKANO, Haruka TAKEZAWA, Mitsuteru NAKAMURA, Yoshiki NAKANISHI, Kunihiro KIHOU, Masamichi NAKAJIMA, Chul-Ho LEE, Akira IYO, Hiroshi EISAKI, Shin-ichi UCHIDA, and Masahito YOSHIZAWA
-
Journal Title
Journal of the Physical Society of Japan
Volume: 82
Issue: 11
Pages: 114604-114604
DOI
NAID
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
[Presentation] 鉄系超伝導体の弾性的性質2015
Author(s)
吉澤正人
Organizer
日本物理学会2015年秋季大会
Place of Presentation
関西大学千里山キャンパス(大阪府・吹田市)
Year and Date
2015-09-18
Related Report
Invited
-
-
-
-
-
[Presentation] パルス磁場中におけるURhGeの超音波測定2015
Author(s)
吉澤正人,赤坂直哉,三田村裕幸,納口昇也,堀越 啓太,中西良樹,榊原俊郎,金道浩一,Jiri Pospisil,山本悦嗣,芳賀芳範
Organizer
日本物理学会 第70回年次大会
Place of Presentation
早稲田大学早稲田キャンパス
Year and Date
2015-03-21 – 2015-03-24
Related Report
-
[Presentation] 強磁性CeIr3B2の超音波測定(2)2015
Author(s)
赤坂直哉,納口昇也,堀越啓太,菅原仁,中村光 輝,中西良樹,吉澤正人
Organizer
日本物理学会 第70回年次大会
Place of Presentation
早稲田大学早稲田キャンパス
Year and Date
2015-03-21 – 2015-03-24
Related Report
-
-
-
-
-
[Presentation] Ultrasonic Measurements of URu2Si2 in Pulsed Magnetic Field2013
Author(s)
M. Yoshizawa, S. Simayi, K. Sakano, Y. Nakanishi, H. Mitamura, K. Araki, T. Sakakibara, K. Kindo, Y. Honma, E. Yamamoto, T. D. Matsuda, Y. Haga, Y. Onuki
Organizer
International Conference on Strongly Correlated Electron Systems (SCES2013)
Place of Presentation
東京大学(東京都文京区)
Related Report
-
-
[Presentation] Correlation between in-plane elastic anomaly and superconductivity in Ba(Fe1-xCox)2As22013
Author(s)
C. Fujii, S. Simayi, K Sakano, H. Takezawa, M. Nakamura, Y. Nakanishi, K. Kihou, M. Nakajima, C. H. Lee, A. Iyo, H. Eisaki, S. Uchida and M. Yoshizawa
Organizer
International Conference on Strongly Correlated Electron Systems (SCES2013)
Place of Presentation
東京大学(東京都文京区)
Related Report
-
-
-