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Control of spin/orbital degrees of freedom and study of critical behavior in 1-dimensional triangle lattice system

Research Project

Project/Area Number 24540373
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionOsaka University

Principal Investigator

MIYASAKA Shigeki  大阪大学, 理学(系)研究科(研究院), 准教授 (70345106)

Co-Investigator(Renkei-kenkyūsha) TAJIMA Setsuko  大阪大学, 大学院理学研究科, 教授 (70188241)
MURAKAMI Youichi  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (60190899)
KUMAI Reiji  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (00356924)
NAKAO Hironori  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (70321536)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords軌道秩序 / スピンフラストレーション / 金属-絶縁体転移 / 量子臨界点 / Cr置換効果 / 量子臨界相
Outline of Final Research Achievements

Critical behaviors of spin/orbital order have been investigated in geometrically frustrated system CaV2O4. CaV2O4 is a Mott insulator, and undergoes orbital order transition around 110 K with decreasing temperature. As a result, spin frustration is suppressed, and CaV2O4 shows antiferromagnetic long-range order below 50 K. The substitution of Cr with 3d3 electronic configuration for V with 3d2 causes the electron doping in this system. The Cr doping induces the disappearance of orbital order, resultantly recovers the spin frustration, and suppresses the long-range magnetic order. In the Cr-doped CaV2O4, we have succeeded in the control of orbital order and spin frustration, which are competing. In addition, the Cr doping induces the metal-insulator transition (Mott transition) as well as spin/orbital order-disorder. At the critical point of spin/orbital order near Mott transition, the non-Fermi liquid behavior by strong spin/orbital fluctuation has been observed.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (46 results)

All 2015 2014 2013 2012 Other

All Journal Article (30 results) (of which Peer Reviewed: 30 results,  Acknowledgement Compliant: 2 results,  Open Access: 4 results) Presentation (12 results) (of which Invited: 4 results) Remarks (4 results)

  • [Journal Article] Electronic Phase Diagram of SrFe2(As1-xPx)2: Effect of Structural Dimensionality2014

    • Author(s)
      Tatsuya Kobayashi, Shigeki Miyasaka, Setsuko Tajima, and Noriko Chikumoto
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 83 Issue: 10 Pages: 104702-104702

    • DOI

      10.7566/jpsj.83.104702

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Evolution of the phase diagram of LaFeP1-xAsxO1-yFy (y=0-0.1)2014

    • Author(s)
      K. T. Lai, A. Takemori, S. Miyasaka, F. Engetsu, H. Mukuda, S. Tajima
    • Journal Title

      Physical Review B

      Volume: 90 Issue: 6

    • DOI

      10.1103/physrevb.90.064504

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative study of the effects of electron irradiation and natural disorder in single crystals of SrFe2(As1-xP x)2 superconductor (x=0.35)2014

    • Author(s)
      C. P. Strehlow, M. Konczykowski, J. A. Murphy, S. Teknowijoyo, K. Cho, M. A. Tanatar, T. Kobayashi, S. Miyasaka, S. Tajima, R. Prozorov
    • Journal Title

      Physical Review B

      Volume: 90 Issue: 2

    • DOI

      10.1103/physrevb.90.020508

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Emergence of Novel Antiferromagnetic Order Intervening between Two Superconducting Phases in LaFe(As1-xPx)O: P-31-NMR Studies2014

    • Author(s)
      Hidekazu Mukuda, Fuko Engetsu, Takayoshi Shiota, Kwing To Lai, Mitsuharu Yashima, Yoshio Kitaoka, Shigeki Miyasaka, Setsuko Tajima
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 83 Issue: 8 Pages: 083702-083702

    • DOI

      10.7566/jpsj.83.083702

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Strongly three-dimensional electronic structure and Fermi surfaces of SrFe2(As0.65P0.35)2: Comparison with BaFe2(As1-xPx)22014

    • Author(s)
      H. Suzuki, T. Kobayashi, S. Miyasaka, T. Yoshida, K. Okazaki, L. C. C. Ambolode II, S. Ideta, M. Yi, M. Hashimoto, D. H. Lu, Z. –X. Shen, K. Ono, H. Kumigashira, S. Tajima, A. Fujimori
    • Journal Title

      Physical Review B

      Volume: 89 Issue: 18

    • DOI

      10.1103/physrevb.89.184513

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Antiferromagnetic spin fluctuations enhancing superconducting transition temperature in LaFeAsO-based high-Tc superconductors2014

    • Author(s)
      H. Mukuda, K. Yamamoto, K. T. Lai F. Engetsu, M. Yashima, Y. Kitaoka, A. Takemori, S. Miyasaka, S. Tajima
    • Journal Title

      JPS Conference Proceedings

      Volume: 3 Pages: 015038-015038

    • DOI

      10.7566/jpscp.3.015038

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancement of superconducting transition temperature due to antiferromagnetic spin fluctuation in iron-pnictides LaFe(As1-xPx)(O1-yFy) : 31P-NMR Studies2014

    • Author(s)
      H. Mukuda, F. Engetsu, K. Yamamoto, K. T. Lai, M. Yashima, Y. Kitaoka, A. Tamemori, S. Miyasaka, S. Tajima
    • Journal Title

      Physical Review B

      Volume: 89 Issue: 6 Pages: 64511-64511

    • DOI

      10.1103/physrevb.89.064511

    • Related Report
      2013 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Persistence of superconducting condensate far above the critical temperature in YBa2(Cu1-xZnx)3Oy revealed by c-axis optical conductivity measurements for several Zn-concentrations and carrier-doping levels2014

    • Author(s)
      E. Uykur, K. Tanaka, T. Masui, S. Miyasaka, S. Tajima
    • Journal Title

      Physical Review Letters

      Volume: 112 Issue: 12

    • DOI

      10.1103/physrevlett.112.127003

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Suppression of superconductivity around x=0.5-0.7 in LaFeP1-xAsxO0.95F0.052014

    • Author(s)
      K. T. Lai, A. Takemori, S. Miyaska, S. Tajima, H. Nakao, R. Kumai, Y. Murakami
    • Journal Title

      JPS Conf. Proc.

      Volume: 1 Pages: 12104-12109

    • DOI

      10.7566/jpscp.1.012104

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single crystal growth of Nd-1111 iron pnictide superconductors by high pressure synthesis2014

    • Author(s)
      A. Takemori, S. Miyaska, S. Tajima, S. Lee, S. Adachi, N. Chikumoto, K. Tanabe
    • Journal Title

      JPS Conf. Proc.

      Volume: 1

    • DOI

      10.7566/jpscp.1.012111

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nodal superconductivity in isovalently substituted SrFe2(As1-xPx)2 pnictide superconductor at the optimal doping x=0.352013

    • Author(s)
      J. Murphy, C. P. Strehlow, K. Cho, M. A. Tanatar, N. Salovich, R. W. Giannetta, T. Kobayashi, S. Miyasaka, S. Tajima, R. Prozorov
    • Journal Title

      Phys. Rev. B

      Volume: 87 Issue: 14

    • DOI

      10.1103/physrevb.87.140505

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Power-law dependence of low-temperature magnetic specific heat for hole-doped delafossite CuCr1-xMgxO22013

    • Author(s)
      T. Okuda, S. Miyasaka
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 6 Pages: 065001-065001

    • DOI

      10.7566/jpsj.82.065001

    • NAID

      210000132618

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] The change of electronic state and crystal structure by post-annealing in superconducting SrFe2(As0.65P0.35)22013

    • Author(s)
      T. Kobayashi, S. Miyasaka, S. Tajima, T. Nakano, Y. Nozue, N. Chikumoto, H. Nakao, R. Kumai, and Y. Murakami
    • Journal Title

      Phys. Rev. B

      Volume: 87 Issue: 17 Pages: 74520-74520

    • DOI

      10.1103/physrevb.87.174520

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ce electronic states in Nd0.45-xCexSr0.55MnO3 probed by x-ray absorption spectroscopy and photoemission2013

    • Author(s)
      T. Shirai, S. Imada, A. Higashiya, A. Sekiyama, S. Suga, T. Muro, Y. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, S. Miyasaka and Y. Tokura
    • Journal Title

      J. Phys.: Condens. Matter

      Volume: 25 Issue: 41 Pages: 415601-415601

    • DOI

      10.1088/0953-8984/25/41/415601

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two Fermi surface states and two Tc-rising mechanisms revealed by transport properties in RFeP1-xAsxO0.9F0.1 (R=La, Pr and Nd)2013

    • Author(s)
      S. Miyasaka, A. Takemori, T. Kobayashi, S. Suzuki, S. Saijo, S. Tajima
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 12 Pages: 124706-124706

    • DOI

      10.7566/jpsj.82.124706

    • NAID

      210000132884

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantitative comparison between electronic Raman spectra and angle-resolved photoemission spectra in superconducting state of Bi22122013

    • Author(s)
      H. T. Nguyen, K. Tanaka, T. Masui, S. Miyasaka, S. Tajima and T. Sasagawa
    • Journal Title

      Physics Procedia

      Volume: 45 Pages: 41-44

    • DOI

      10.1016/j.phpro.2013.04.047

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Precursor superconductivity and superconducting fluctuation regime revealed by the c-axis optical spectra of YBa2(Cu1-xZnx)3Oy2013

    • Author(s)
      E. Uykur, K. Tanaka, T. Masui, S. Miyasaka, S. Tajima
    • Journal Title

      Physics Procedia

      Volume: 45 Pages: 45-48

    • DOI

      10.1016/j.phpro.2013.04.048

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multi-frequency ESR in EuFe2As22013

    • Author(s)
      M. Ikeda, M. Hagiwara, T. Kobayashi, W. Hirata, S. Miyasaka, S. Tajima
    • Journal Title

      Journal of the Korean Physical Society

      Volume: 62 Issue: 12 Pages: 2007-2007

    • DOI

      10.3938/jkps.62.2007

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Transport Properties of the Iron-based Superconductor SrFe2(As,P)2 in High Magnetic Fields2013

    • Author(s)
      T. Kida, T. Kobayashi, S. Miyasaka, S. Tajima and M. Hagiwara
    • Journal Title

      J. Low. Temp. Phys.

      Volume: 170 Issue: 5-6 Pages: 346-351

    • DOI

      10.1007/s10909-012-0769-2

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Coexistence of the pseudogap and the superconducting gap revealed bythe c-axis optical study of Yba_2(Cu_<1-x>Zn_x)_3O_<7-5>2013

    • Author(s)
      E. Uykur, et al.
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 82 Issue: 3 Pages: 033701-033701

    • DOI

      10.7566/jpsj.82.033701

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Upper critical field of isovalent substituted SrFe_2(As_<1-x>P_x)_22013

    • Author(s)
      S. Yeninas, et al.
    • Journal Title

      Physical Review B

      Volume: 87 Issue: 9

    • DOI

      10.1103/physrevb.87.094503

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nodal superconductivity in isovalently substituted SrFe2(As1-xPx)2 pnictide superconductor at the optimal doping x=0.352013

    • Author(s)
      J. Murphy, C. P. Strehlow, K. Cho, M. A. Tanatar, N. Salovich, R. W. Giannetta, T. Kobayashi, S. Miyasaka, S. Tajima, R. Prozorov
    • Journal Title

      Physical Review B

      Volume: 87

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Unconventional superconductivity with nodes in single-crystalline SrFe_2(As_<0.65>P_<0.35>)_2 as seen via ^<31>P-NMR study and specific heat2012

    • Author(s)
      T. Dulguun, et al.
    • Journal Title

      Physical Review B

      Volume: 85 Issue: 14 Pages: 144515-144515

    • DOI

      10.1103/physrevb.85.144515

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preparation and physical properties of (La,Pr)BaMnMoO6 double perovskite series2012

    • Author(s)
      T. M. Meaz, S. Tajima, S. A. Saafan, S. Miyasaka, M. K. El Nimr, R. E. El Shater
    • Journal Title

      Journal of American Science

      Volume: 8 Pages: 844-852

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reflective terahertz time-domain spectroscopy measurement on the stripe-ordered superconductor La_<1.84-y>Nd_ySr_<0.16>CuO_42012

    • Author(s)
      T. Miyake, et al.
    • Journal Title

      J. Phys. Soc. Jpn. Suppl. B

      Volume: 81 Issue: Suppl.B Pages: SB034-SB034

    • DOI

      10.1143/jpsjs.81sb.sb034

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Pseudogap study using c-axis optical spectra of underdoped Yba_2Cu_3O_<7-δ>2012

    • Author(s)
      E. Uykur, et al.
    • Journal Title

      J. Phys. Soc. Jpn. Suppl. B

      Volume: 81 Issue: Suppl.B Pages: SB035-SB035

    • DOI

      10.1143/jpsjs.81sb.sb035

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Correlation between Tc and Transport Properties in PrFeP1-xAsxO0.9F0.12012

    • Author(s)
      Akira Takemori
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: Suppl.B Pages: SB043-SB043

    • DOI

      10.1143/jpsjs.81sb.sb043

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single crystal growth and physical properties in SrFe_2(As_<1-x>P_x)_22012

    • Author(s)
      T. Kobayashi, et al.
    • Journal Title

      J. Phys. Soc. Jpn. Suppl. B

      Volume: 81 Issue: Suppl.B Pages: SB045-SB045

    • DOI

      10.1143/jpsjs.81sb.sb045

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cr- and Mo-Doping Effects on Structural and Orbital Order Phase Transition in Spinel-Type MnV2O42012

    • Author(s)
      Kazuhiro Hemmi
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 81 Issue: Suppl.B Pages: SB030-SB030

    • DOI

      10.1143/jpsjs.81sb.sb030

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Soft- and Hard-X-ray Photoemission Spectroscopy of La2-2xSr1+2xMn2O72012

    • Author(s)
      H. Fujiwara, A. Sekiyama, H. Sugiyama, G. Funabashi, T. Muro, A. Higashiya, M. Yabashi, K. Tamasaku, T. Ishikawa, S. Miyasaka, H. Nakamura, T. Kimura, Y. Tokura and S. Suga
    • Journal Title

      J. Phys. Soc. Jpn. Suppl. B

      Volume: 81 Issue: Suppl.B Pages: SB069-SB069

    • DOI

      10.1143/jpsjs.81sb.sb069

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 幾何学的フラストレーション系CaV2O4のCr置換による軌道秩序および構造相転移の抑制2015

    • Author(s)
      徳久太一、宮坂茂樹、田島節子、佐賀山基、中尾裕則、熊井玲児、村上洋一
    • Organizer
      物構研サイエンスフェスタ2014(第6回MLFシンポジウム、第32回PFシンポジウム)
    • Place of Presentation
      つくば国際会議場
    • Year and Date
      2015-03-17 – 2015-03-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] CaV2O4における磁気・軌道秩序へのCr置換効果2014

    • Author(s)
      徳久太一、宮坂茂樹、田島節子、中尾裕則、熊井玲児、村上洋一
    • Organizer
      日本物理学会
    • Place of Presentation
      中部大学
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] Two-types of quantum critical behaviors by 2- and 3-dimensional spin fluctuation near Mott transition in perovskite vanadates2014

    • Author(s)
      S. Miyasaka
    • Organizer
      Collaborative Conference on Materials Research (CCMR) 2014
    • Place of Presentation
      Incheon, Korea
    • Year and Date
      2014-06-23 – 2014-06-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Cr-doping Effect on Spin and Orbital Ordering in Geometrically Frustrated System CaV2O42014

    • Author(s)
      T. Tokuhisa, S. Miyasaka et al.
    • Organizer
      1st KANSAI Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Osaka, Japan
    • Related Report
      2013 Research-status Report
  • [Presentation] 幾何学的フラストレーション系CaV2O4における磁気・軌道秩序へのCr置換効果2014

    • Author(s)
      徳久太一, 宮坂茂樹, 田島節子 他
    • Organizer
      物構研サイエンスフェスタ2013
    • Place of Presentation
      つくば国際会議場
    • Related Report
      2013 Research-status Report
  • [Presentation] 1111As/P固溶系の軌道クロッシングに伴う2つのフェルミ面状態とTc上昇機構2014

    • Author(s)
      宮坂茂樹
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Two Tc-rising mechanisms revealed by transport properties in iron pnictide superconductors2013

    • Author(s)
      S. Miyasaka
    • Organizer
      Collaborative Conference on Materials Research (CCMR) 2013
    • Place of Presentation
      Jeju, Korea
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Quantum critical behaviors induced by 2-dimensional antiferromagnetic fluctuation near Mott transition in 3-dimensional perovskite vanadate2013

    • Author(s)
      S. Miyasaka et al.
    • Organizer
      The International Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2013 Research-status Report
  • [Presentation] ペロブスカイト型バナジウム酸化物におけるランダムネスによる磁気・軌道秩序制御とキャリアドーピングによるモット転移近傍の2次元スピンゆらぎによる臨界異常2013

    • Author(s)
      宮坂茂樹
    • Organizer
      構造物性研究センター研究会
    • Place of Presentation
      つくば
    • Related Report
      2012 Research-status Report
  • [Presentation] Relation between superconductivity and antiferromagnetic fluctuation in As/P-substituted 1222012

    • Author(s)
      S. Miyasaka
    • Organizer
      IRON-SEA second meeting
    • Place of Presentation
      Bratislava, Slovak Republic
    • Related Report
      2012 Research-status Report
  • [Presentation] Effect of R ion size variance on spin and orbital order in RVO3 (R=rare earth and Y)2012

    • Author(s)
      S. Miyasaka R. Fukuta, K. Hemmi, N. Sasaki, S. Tajima, D. Kawana, K. Ikeuchi, Y. Yamasaki, A. Nakao, H. Nakao, R. Kumai, Y. Murakami, K. Iwasa
    • Organizer
      The 19th ICM-SCES
    • Place of Presentation
      Busan, Korean
    • Related Report
      2012 Research-status Report
  • [Presentation] 3d電子系における量子臨界性と異常物性の制御-非フェルミ液体から超伝導まで-2012

    • Author(s)
      宮坂茂樹
    • Organizer
      研究会「室温超伝導の可能性を探る」(公益財団法人 山田科学振興財団)
    • Place of Presentation
      品川
    • Related Report
      2012 Research-status Report
    • Invited
  • [Remarks] 大阪大学田島研究室

    • URL

      http://buna.phys.sci.osaka-u.ac.jp/news_j.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 大阪大学物理学専攻年次報告

    • URL

      http://www.phys.sci.osaka-u.ac.jp/ja/aboutus/index.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] 大阪大学田島研究室

    • URL

      http://buna.phys.sci.osaka-u.ac.jp/news_j.html

    • Related Report
      2012 Research-status Report
  • [Remarks] 物理学専攻年次報告

    • URL

      http://www.phys.sci.osaka-u.ac.jp/ja/research/report/index.html

    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2020-05-15  

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