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ELECTRON CORRELATION AND DESIGH OF CLUSTERES STABILIZED IN PERIODIC NANOSPACE OF ZEOLITE CRYSTALS

Research Project

Project/Area Number 13304027
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionOSAKA UNIVERSITY

Principal Investigator

NOZUE Yasuo  OSAKA UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, PROFESSOR, 大学院・理学研究科, 教授 (60125630)

Co-Investigator(Kenkyū-buntansha) ARITA Ryotaro  UNUVERSITY OF TOKYO, GRADUATE SCHOOL OF SCIENCE, ASSISTANT PROFESSOR, 大学院・理学系研究科, 助手 (80332592)
OTO Kenichi  OSAKA UNIVERSITY, FACULTY OF SCIRENCE, ASSOCIATE PROFESSOR, 理学部, 助教授 (30263198)
AOKI Hideo  OSAKA UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, PROFESSOR, 大学院・理学系研究科, 教授 (50114351)
ARAKI Shingo  OSAKA UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, ASSISTANT PROFESSOR, 大学院・理学研究科, 助手 (90362615)
NAKANO Takehito  OSAKA UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, ASSISTANT PROFESSOR, 大学院・理学研究科, 助手 (50362611)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥54,730,000 (Direct Cost: ¥42,100,000、Indirect Cost: ¥12,630,000)
Fiscal Year 2003: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2002: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Fiscal Year 2001: ¥37,310,000 (Direct Cost: ¥28,700,000、Indirect Cost: ¥8,610,000)
Keywordscluster / zeolite / ferromagnetism / μSR / electron spin resonance / orbital degeneracy / spin-orbit interaction / electron correlation / ナノクラスター / アルカリ金属
Research Abstract

A ferromagnetism has been observed potassium nanoclusters stabilized in cages of aluminosilicate zeolite LTA, when the average s-electron number of clusters exceeds 2. In the present research, the g-value of electron spin resonance was found to decrease when the average s-electron number exceeds 2. The s-electrons more than 2 per cluster occupy 1p-like orbital of cluster. The origin of ferromagnetism is assigned to the canting of antiferromagnetically ordered spins, because the antisymmetric exchange interaction can be enhanced strongly by the degeneracy of 1p-like orbital. The canting model is supported by the magnetization process at high magnetic fields. The μSR study of potassium clusters was performed, and the local magnetic field and its dynamics were analyzed. The results were well consistent with above magnetic model. At the same time, the increase in the asymmetry of μSR signal was observed when a very weak longitudinal magnetic field was applied. This behavior was assigned to the orientation of spontaneous magnetization generated by the spin-canting. The first-principles band calculations were performed for the potassium clusters stabilized in the zeolite LTA. A very simple band structure was obtained indicating that the model of superatom crystal was found to be applicable to this system. The energy band width was much narrower than the electron repulsion energy of electrons confined in the same cluster. The spatial distribution of the edge state in the quantum Hall regime was studied by the magnetocapacitance technique by the use of the thin-wire multigate along the sample boundary. The breakdown of the quantum Hall effect was studied in terms of the sample width dependence. The origin of sub-linear dependence on the sample width was assigned to the bulk nature of the two-dimensional electron system.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (49 results)

All Other

All Publications (49 results)

  • [Publications] 野末泰夫: "配列ナノ空間における相関s電子系"固体物理. 36. 701 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 池田卓史: "ゼオライトLTA中の配列した金属カリウムクラスターの結晶構造解析と新物性"結晶学会誌. 43. 248 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai: "Investigation of incompressible region by magnetocapacitance measurement in quantum Hall Plateaux"Physica E. 9. 243-249 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Ikemoto: "Magnetic Property of Potassium Clusters in Low-Silica Type Zeolite FAU"Trans.Mat.Res.Soc.Jpn.. 26. 1179-1182 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto: "Width of compressible strips in quantum Hall regime"Physica B. 298. 18-23 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Sanuki: "Transition between different types of breakdown of the quantum Hall effect by illumination, temperature change and the application of gate voltage"Solid State Commun.. 117. 343-347 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 野末泰夫: "ゼオライトの配列ナノ空間を利用した新物質系"生産と技術. 54. 41-43 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano: "Electron Spin Resonance Study and Orbital Degeneracy of Potassium Clusters in Zeolite LTA"J.Phys.Soc.Jpn.. 71. 199-201 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto: "Two types of breakdown of quantum Hall effect depending on the electron density fluctuation"Physica E. 12. 173-177 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano: "μSR study on ferromagnetism o potassium clusters in aluminosilicate zeolite LTA"Physica B. 326. 550-555 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Igarashi: "NMR Study of Rb Clusters in Zeolite LTA"Physica B. 327. 72-78 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai: "Spatial distribution of edge states in the quantum Hall plateaus investigated by magnetocapacitance"Phys.Rev.B. 68. 165347-1-165347-5 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Hideo Aoki: "Design of electron correlation effects in interfaces and nanostructures"Applied Surf.Sci.. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai: "Local electron density near the 2DES boundary formed by side-gate voltage in the quantum Hall regime"Physica E. 22. 173-176 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto: "Bulk nature of sub-linear width dependent breakdown of the quantum Hall effect"Physica E. 22. 197-200 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano: "Spin cant model of ferromagnetism in potassium clusters incorporated in zeolite LTA"J.Mag.Mag.Mat.. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] D.Kiniwa: "μSR study of ferromagnetism in potassium clusters incorporated in zeolite LTA"J.Mag.Mag.Mat.. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Arita: "Electronic Properties of Alkali-Metal Loaded Zeolites --- A "Supercrystal" Mott Insulator"Phys.Rev.B.. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano, Y.Ikemoto, Y.Nozue: "Electron Spin Resonance Study and Orbital Degeneracy of Potassium Clusters in Zeolite LTA"J. Phys. Soc. Jpn.. Vol.71, Suppl.. 199-201 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano, D.Kiniwa, F.L.Pratt, I.Watanabe, Y.Ikemoto, Y.Nozue: "μSR study on ferromagnetism of potassium clusters in aluminosilicate zeolite LTA"Physica B. Vol.326. 550-555 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Igarashi, T.Kodaira, T.Ikeda, M.Itoh, T.Shimozu, A.Goto, Y.Nozue: "NMR study of Rb Clusters in Zeolite LTA"Physica B. Vol.327. 72-78 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano, D.Kiniwa, Y.Ikemoto, Y.Nozue: "Spin cant model of ferromagnetism in potassium clusters incorporated in zeolite LTA"to be published in J. Mag. Mag. Mat..

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] D.Kiniwa, T.Nakano, F.L.Pratt, I.Watanabe, Y.Ikemoto, Y.Nozue: "μSR study of ferromagnetism in potassium clusters incorporated in zeolite LTA"to be published in Phys. Rev. B..

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] R.Arita, T.Miyake, T.Kotani, M.van Schilfgaarde, T.Oka, K.Kuroki, Y.Nozue, H.Aoki: "Electronic Properties of Alkali-Metal Loaded Zeolites ---A "supercrystal" Mott Insulator"to be published in Phys. Rev. B..

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai, K.Oto, S.Takaoka, K.Murase: "Investigation of incompressible region by magnetocapacitance measurement in quantum Hall Plateaux"Physica E. Vol.9. 243-249 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto, S.Takaoka, K.Murase: "Width of compressible strips in quantum Hall regime"Physica B. Vol.298. 18-23 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai, S.Hashimoto, K.Oto, S.Takaoka, K.Murase: "Spatial distribution of edge states in the quantum Hall effect investigated by magnetocapacitance with multi-wire gates"Proc. 26th Int. Conf. on Physics of Semiconductors, Edinburgh, UK. July.29-Aug. 2. 138-138 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto, T.Sanuki, S.Takaoka, K.Murase: "Two types of breakdown of quantum Hall effect depending on the electron density fluctuation"Physica E. Vol.12. 173-177 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai, S.Hashimoto, K.Oto, K.Murase: "Spatial distribution of edge states in the quantum Hall plateaus investigated by magnetocapacitance"Phys. Rev. B. Vol.68. 165347-1-65347-5 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Arai, S.Hashimoto, K.Oto: "Local electron density near the 2DES boundary formed by side-gate voltage in the quantum Hall regime"Physica E. Vol.22. 173-176 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.Oto, T.Tsubota: "Bulk nature of sub-linear width dependent breakdown of the quantum Hall effect"Physica E. Vol.22. 197-200 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Nakano, D.Kiniwa, F.L.Pratt, I.Watanabe, Y.Ikemoto, Y.Nozue: "μSR Study on Ferromagnetism of Potassium Clusters in Aluminosilicate Zeolite LTA"Physica B. 326. 550-555 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Nakano, D.Kiniwa, Y.Ikemoto, Y.Nozue: "Spin Cant Model of Ferromagnetism in Potassium Clusters Incorporated in Zeolite LTA"Journal of Magnetism and Magnetic Materials. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] D.Kiniwa, T.Nakano, F.L.Pratt, I.Watanabe, Y.Ikemoto, Y.Nozue: "μSR Study of Ferromagnetism in Potassium Clusters incorporated in Zeolite LTA"Journal of Magnetism and Magnetic Materials. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Igarashi, T.Kodaira, T.Ikeda, M.Itoh, T.Shimizu, A.Goto, Y.Nozue: "NMR Study of Rb Clusters in Zeolite LTA"Physica B. 327. 72-78 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Oto, T.Tsubota: "Bulk Nature of Sub-linear Width Dependent Breakdown of Quantum Hall Effect"Physics E. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Arai, S.Hashimoto, K.Oto: "Local electron density near the 2DES boundary formed by side-gate voltage in the quantum Hall regime"Physica E. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Arai, S.Hashimoto, K.Oto, K.Murase: "Spatial distribution of edge states in the quantum Hall plateaus investigated by magnetocapacitance"Phys.Rev.B. 68. 165347-1-165347-5 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.Arita, T.Miyake, T.Kotani, M.van Schilfgaarde, T.Oka, K.Kuroki: "Electronic properties of alkali-metal loaded zeolites --- a "supercrystal" Mott insulator"Phys.Rev.B. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Aoki: "Design of electron correlation effects in interfaces and nanostructures"Applied Surf.Sci.. (印刷中). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Oto: "Two types of breakdown of quantum Hall effect depending on the electron density fluctuation"Physica E. 12. 173-177 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.Oto: "Magnetoresistance in a GaAs/AlGaAs two-dimensional electron gas with one-dimensional periodic potential fabricated by AFM local anodization"Microelectronic Engineering. 63. 253-258 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Nakano: "μSR Study on Ferromagnetism of Potassium Clusters in Aluminosilicate Zeolite LTA"Physica B. 326. 550-555 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Igarashi: "NMR Study of Rb Clusters in Zeolite LTA"Physica B. 327. 72-78 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Nakano: "Electron Spin Resonance Study and Orbital Degeneracy of Potassium Clusters in Zeolite LTA"J.Phys.Soc.Jpn.Suppl.. 71. 199-201 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 野末泰夫: "配列ナノ空間における相関s電子系"固体物理. 36. 701 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 池田卓史: "ゼオライトLTA中の配列した金属カリウムクラスターの結晶構造解析と新物性"結晶学会誌. 43. 248 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Nakano: "Ferromagnetic Properties of Rubidium Clusters in Zeolite LTA"J.Mag.Mag.Mat. 226-230. 238 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Ikemoto: "Insulating Phase of Potassium Clusters Arrayed in Low-Silica Type Zeolite FAU"J.Mag.Mag.Mat. 226-230. 229 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2020-05-15  

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