Strongly correlated electronic phenomena induced by multipolar degrees of freedom in non-Kramers systems(Fostering Joint International Research)
Project/Area Number |
15KK0169
|
Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research)
|
Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics II
|
Research Institution | Hiroshima University |
Principal Investigator |
|
Research Collaborator |
Gegenwart Philipp アウグスブルグ大学, Institute for Physics, Professor
Mignot Jean-Michel レオン・ブリルアン研究所, CEA-CNRS Saclay, Researcher
|
Project Period (FY) |
2016 – 2018
|
Project Status |
Completed (Fiscal Year 2018)
|
Budget Amount *help |
¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
|
Keywords | Quadrupole / Superconductivity / Neutron scattering / Thermal expansion / Magnetostriction / quadrupole / superconductivity / neutron scattering / thermal expansion / magnetostriction / neutron / 低温物性 / 磁性 / 中性子散乱 |
Outline of Final Research Achievements |
We have studied low-temperature transport and magnetic properties of intermetallic cubic systems PrT2Zn20 (T=Ir, Rh) with active quadrupoles of 4f2 electrons. Using high-quality single crystals prepared by myself, we performed neutron scattering experiments at LLB, France, and thermal expansion and magnetostriction measurements at University of Augsburg, Germany. We succeeded in determination of the order parameter of the quadrupole order and revealed a divergent behavior of the thermal expansion coefficient. The results suggest strong interplay between the quadrupolar degrees of freedom and the conduction electrons.
|
Academic Significance and Societal Importance of the Research Achievements |
銅酸化物やセリウム化合物などの強相関電子系では,主に磁気モーメント(スピン)が磁性や超伝導を担っている。本研究では,磁気モーメントよりも高次のテンソル量である電気四極子(異方的な電荷分布)に着目し,四極子と伝導電子の相関によって生じる電気的・磁気的性質について調べた。四極子の秩序状態を微視的プローブである中性子散乱により同定し,また熱膨張係数が秩序状態においても発散的に振る舞うことを初めて明らかにした。これらの結果より,四極子は磁気モーメントと同様に多彩な物性を担っており,強相関電子系における重要な自由度であることが分かった。
|
Report
(4 results)
Research Products
(73 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Journal Article] Structural, Magnetic, and Superconducting Properties of Caged Compounds ROs2Zn20 (R = La, Ce, Pr, and Nd)2017
Author(s)
K. Wakiya, T. Onimaru, K. T. Matsumoto, Y. Yamane, N. Nagasawa, K. Umeo, S. Kittaka, T. Sakakibara, Y. Matsushita, and T. Takabatake
-
Journal Title
J. Phys. Soc. Jpn.
Volume: 86
Issue: 3
Pages: 034707-034707
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
-
[Journal Article] Anisotropic B-T Phase Diagram of Non-Kramers System PrRh2Zn202017
Author(s)
T. Yoshida, Y. Machida, K. Izawa, Y. Shimada, N. Nagasawa, T. Onimaru, T. Takabatake, A. Gourgout, A. Pourret, G. Knebel, and J.-P. Brison
-
Journal Title
J. Phys. Soc. Jpn. (Editor’s choice)
Volume: 86
Issue: 4
Pages: 044711-044711
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
-
-
[Journal Article] Quadrupole-Driven Non-Fermi Liquid and Magnetic-Field Induced Heavy Fermion States in a Non-Kramers Doublet System2016
Author(s)
T. Onimaru, K. Izawa, K. T. Matsumoto, T. Yoshida, Y. Machida, T. Ikeura, K. Wakiya, K. Umeo, S. Kittaka, K. Araki, T. Sakakibara, T. Takabatake
-
Journal Title
Phys. Rev. B
Volume: 94
Issue: 7
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 強相関立方晶Pr化合物における4f基底状態を反映した角度分解内殻光電子スペクトル線二色性の観測2017
Author(s)
濵本諭, 藤岡修平, 金井惟奈, 山神光平, 中谷泰博, 藤原秀紀, 木須孝幸, 東谷篤志, 山崎篤志, 門野利治, 今田真, 田中新, 玉作賢治, 矢橋牧名, 石川哲也, 松本圭介, 鬼丸孝博, 高畠敏郎, 関山明
Organizer
日本物理学会2017年春季大会
Place of Presentation
大阪大学 豊中キャンパス
Year and Date
2017-03-16
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] PrT2Zn20(T=Ir, Rh)のパルス強磁場中磁気抵抗測定2016
Author(s)
三田村裕幸, E. Kampert, T. Foerster, K. Goetze, S. Zherlitsyin, J. Wosnitza, 榊原俊郎, 脇舎和平, 松本圭介, 鬼丸孝博, 高畠敏郎
Organizer
日本物理学会2016年秋季大会
Place of Presentation
金沢大学 角間キャンパス
Year and Date
2016-09-13
Related Report
-
[Presentation] 四極子秩序をもつPrPb3の高圧物性2016
Author(s)
郷地順, 石垣賢卯, Bosen Wang, 上床美也, 狩野みか, 鬼丸孝博, 鈴木博之, 榊原俊郎
Organizer
日本物理学会2016年秋季大会
Place of Presentation
金沢大学 角間キャンパス
Year and Date
2016-09-13
Related Report
-
-
-