Field-induced quantum phase transitions studied by means of low-temperature magnetization, specific heat and dielectric measurements
Project/Area Number |
20244053
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | The University of Tokyo |
Principal Investigator |
SAKAKIBARA Toshiro (SAKAKIBARA Toshio) 東京大学, 物性研究所, 教授 (70162287)
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Co-Investigator(Renkei-kenkyūsha) |
TAYAMA Takashi 東京大学, 物性研究所, 助教 (20334344)
MITAMURA Hiroyuki 東京大学, 物性研究所, 助教 (60282604)
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Project Period (FY) |
2008 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥41,860,000 (Direct Cost: ¥32,200,000、Indirect Cost: ¥9,660,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2009: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2008: ¥30,680,000 (Direct Cost: ¥23,600,000、Indirect Cost: ¥7,080,000)
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Keywords | 強相関電子系 / 量子相転移 / 磁化測定 / 比熱測定 / メタ磁性転移 / 磁場誘起秩序 / メタ磁性 / 重い電子系物質 / 価数転移 / マルチフェロイクス / 三角格子 / 磁力計 / ダイマー系物質 / 三重項状態 / 強相関系 / 極低温比熱測定 / 強磁場 |
Research Abstract |
A quantum phase transition is a transition between different phases of matter at zero temperature. Contrary to the ordinary classical phase transitions which can be attained by decreasing temperature, quantum phase transitions can only be accessed by varying a controlling parameter such as magnetic field, pressure or chemical compositions at absolute zero temperature. Quantum phase transitions have attracted much attention because they describe abrupt changes in the ground state of many-body systems due to quantum fluctuations and exotic phases may appear. In this project, various magnetic-field-induced quantum phase transitions have been studied experimentally. For this purpose, we have developed a low-temperature magnetometer operating at low temperatures down to 50 mK in magnetic fields up to 17 T-a state of the art technology.
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Report
(6 results)
Research Products
(79 results)
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[Journal Article] Destruction of the Kondo effect in the cubic heavy-fermion compound Ce_3Pd_<20>Si_62012
Author(s)
J. Custers, K-A. Lorenzer, M. Muller, A. Prokofiev, A. Sidorenko, H. Winkler, A. M. Strydom, Y. Shimura, T. Sakakibara, R. Yu, Q. Si and S. Paschen
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Journal Title
Nat. Mater
Volume: 11
Issue: 3
Pages: 189-194
DOI
Related Report
Peer Reviewed
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[Journal Article] Low Temperature Magnetic Properties of Ce_3Pd_20Si_62010
Author(s)
H. Mitamura, T. Tayama, T. Sakakibara, S. Tsuduku, G. Ano, I. Ishii, M. Akatsu, Y. Nemoto, T. Goto, A. Kikkawa, and H. Kitazawa
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Journal Title
J. Phys. Soc. Jpn
Volume: 79
Issue: 7
Pages: 6-6
DOI
Related Report
Peer Reviewed
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[Journal Article] Magnetization “Steps” on a Kagome Lattice in Volborthite2009
Author(s)
H. Yoshida, Y. Okamoto, T. Tayama, T. Sakakibara, M. Tokunaga, A. Matsuo, Y. Narumi, K. Kindo, M. Yoshida, M. Takigawaand Z. Hiroi
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Journal Title
Journal of the Physical Society of Japan
Volume: 78
Issue: 4
Pages: 043704-043704
DOI
NAID
ISSN
0031-9015, 1347-4073
Related Report
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[Journal Article] Magnetization "Steps" on a Kagome Lattice in Volborthite2009
Author(s)
H.Yoshida, Y.Okamoto, T.Tavama, T.Sakakibara, M.Tokunaga, A.Matsuo, Y.Narumi, K.Kindo, M.Yoshida, M.Takigawa, Z.Hiroi
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Journal Title
NAID
Related Report
Peer Reviewed
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[Journal Article] Superconductivity and quantum criticality inthe heavy-fermion systemβ-YbAlB_42008
Author(s)
S. Nakatsuji, K. Kuga, Y. Machida, T. Tayama, T. Sakakibara, Y. Karaki, H. Ishimoto, S. Yonezawa, Y. Maeno, E. Pearson, G. G. Lonzarich, L. Balicas, H. Lee and Z. Fisk
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Journal Title
Nature Physics
Volume: 4
Issue: 8
Pages: 603-607
DOI
Related Report
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[Journal Article] Superconductivity and quantum criticality in the heavy-fermion system beta-YbA1B_42008
Author(s)
S.Nakatsuji, K.Kuga, Y.Machida, T.Tayama, T.Sakakibara Y.Karaki, H.Ishimoto, S.Yonezawa, Y.Maeno, E.Pearson, G.G.Lonzarich, L.Balicas, H.Lee, Z.Fisk
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Journal Title
Nature Physics 4
Pages: 603-607
Related Report
Peer Reviewed
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[Presentation] 強磁性超伝導体UCoGeの低温磁化測定2009
Author(s)
出口和彦,尾崎英祐,坂聖光,田村暢之,佐藤憲昭,志村恭通,榊原俊郎,本間佳哉,塩川佳伸,佐藤伊佐務,石田憲二
Organizer
日本物理学会2009年秋季大会
Place of Presentation
熊本大学
Year and Date
2009-09-25
Related Report
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[Presentation] Magnetic Properties of Ce_3Pd_20Si_6 at Very Low Temperatures2009
Author(s)
H. Mitamura, T. Sakuraba, T. Tayama, T. Sakakibara, S. Tsuduku, G. Ano, I. Ishii, M, Akatsu, Y. Nemoto, T. Goto, H. Kitazawa
Organizer
The International Conference on Magnetism ICM2009
Place of Presentation
Karlsruhe, Germany
Year and Date
2009-07-28
Related Report
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[Presentation] Ce_3Pd_20Si_6の極低温磁化2008
Author(s)
三田村裕幸,桜庭孝明,田山孝,榊原俊郎,都竹星志,阿野元貴,石井勲,赤津光洋,根本祐一,後藤輝孝,北澤英明
Organizer
日本物理学会2008年秋季大会
Place of Presentation
岩手大学
Year and Date
2008-09-21
Related Report
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[Presentation] Ce3Pd20Si6の極低温磁化2008
Author(s)
三田村裕幸, 桜庭孝明, 田山孝, 榊原俊郎, 都竹星志, 阿野元貴, 石井勲, 赤津光洋, 根本祐一, 後藤輝孝, 北澤英明
Organizer
日本物理学会2008年秋季大会
Place of Presentation
岩手大学
Year and Date
2008-09-21
Related Report
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