• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Quantum Critical Phenomena in Heavy-Fermion System under Pressures

Research Project

Project/Area Number 11440111
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

TAKABATAKE Toshiro  Hiroshima University, Grad. School of Advanced Sciences of Matter, Prof., 大学院・先端物資科学研究科, 教授 (40171540)

Co-Investigator(Kenkyū-buntansha) IGA Fumitoshi  Hiroshima University, Grad. School of Advanced Sciences of Matter, Assoc. Prof., 大学院・先端物資科学研究科, 助教授 (60192473)
UMEO Kazunori  Hiroshima University, Grad. School of Advanced Sciences of Matter, Res. Assoc., 大学院・先端物資科学研究科, 助手 (10223596)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥12,400,000 (Direct Cost: ¥12,400,000)
Fiscal Year 2001: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2000: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1999: ¥6,400,000 (Direct Cost: ¥6,400,000)
KeywordsPressure / Quantum Critical Phenomena / Heavy Fermion System / Spin Fluctuation / Antiferromagnetism / Single Crystal / Uniaxial Pressure / Crystal Field / スピンゆらぎ / 超伝導 / スピン密度波 / 磁気転移
Research Abstract

We studied the quantum critical phenomena of heavy fermion systems under pressures by means of high-quality single crystals. New findings are as followings.
1. Hexagonal heavy fermion system Ce_7Ni_3 : Ce_7Ni_3 undergoes tow antiferromagnetic transitions at 1.8 K and 0.7 K. The antiferromagnetic order vanishes at B//c = 0.3 T. For B//c > 0.6 T, a new magnetic ordered phase appears below 0.5 K. For 0.3 T < B//c < 0.6 T, the specific heat C follows the form of C/T∝-lnT, so called non-Fermi-liquid behavior. The origin of the field-induced magnetic phase may be attributed to a geometrical frustration in the magnetic moment of Ce sites formed a quasi-regular tetrahedron
2 Uniaxial-pressure induced magnetic order in CeNiSn : CeNiSn is a paramagnetic semimetal with a pseudo-gap. By applying the uniaxial pressure of 0.13 GPa along the c axis, an antiferromagnetic order appears at around 3 K. For P//a, however, the density of carriers increases. The Kondo temperature for the crystal field ground state estimated by the resistivity for P//c is suppressed with pressure. Therefore, we may deduce that the formation of magnetic order is attributed to the weakened hybridization in a-b plane between the 4f electrons for the crystal field ground state and conduction electrons.
3 Non Fermi liquid behavior in Ce_2Rh_3Ge_5 under pressures : The critical pressure Pc where the antiferromagnetic order of orthorhombic Ce_2Rh_3Ge_5 with T_N = 4.9 vanishes was estimated to be 0.45 GPa. Even for P>3Pc, non-Fermi-liquid behavior is observed in both the resistivity ρ and the susceptibility χ : ρ ∝T^<1.45> and χ ∝1-T^<0.27>. Because the magnetization hardly decreases for P = 3Pc, the origin of the non-Fermi-liquid behavior may be due to a short-rang magnetic order of the remaining local moments.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (51 results)

All Other

All Publications (51 results)

  • [Publications] K.Umeo: "Magnetic instability in Ce_7Ni_3 studied by low-temperature specific heat and magnetic suscetibility"Physica B. 259-261. 407-408 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Izawa: "Metallic ground state of CeNiSn"Phys.Rev.B. 59. 2599-2603 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Takabatake: "Impurity-induced localization of quasiparticles in the presence of a pseudogap in CeNiSn"Phys.Rev.B. 59. 13878-13881 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Umeo: "Uniaxial-Stress Induced Magnetic Order in CeNiSn"Phys.Rev.B. 60. R6957-R6960 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Z.Hossain: "Antiferromagnetic Kondo-lattice systems Ce_2Ph_3Ge_5 and Ce_2Ir_3Ge_5 with moderate heavy-fermion behavior"Phys.Rev.B. 60. 10383-10387 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Echizen: "Effect of Kondo-hole impurity on the pseudogap in CeNiSn"Physica B. 259-261. 292-293 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Kadowaki: "Incommensurate Magnetic Structure of the Heavy Fermion Antiferromagnet Ce_7Ni_3"J.Phts.Soc.Jpn.. 69. 2269-2279 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Mishima: "Nuclear magnetic resonance and nuclear quadruple resonance studies of ^<61>Ni in heavy fermion compound Ce_7Ni_3"Solid State Communications. 87. 5134-5136 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Echizen: "Magnetic ordering in single crystal CeNi_<0.82>Cu_<0.18>Sn"Solid State Communications. 115. 587-591 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Yoshino: "High-field susceptibility of Kondo semimetals CeNiSn and CeRhSb"Physica B. 281&282. 291-293 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Bando: "Thermoelectric power of CeNi_<1-x>T_xSn(T=Co, Cu, Pt) and Ce_<1-y>La_ySn(x, y=0.01 and 0.05)"Physica B. 281&282. 294-295 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Motoya: "Neutron scattering study of heavy fermion antiferromagnet Ce_7Ni_3 under pressure"J.Magn.Magn.Mater.. 226-230. 137-138 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A.Schenck: "Muon-spin-rotation study of Ce_7Ni_3:muon-related and intrinsic properties of the paramagnetic phase"J.Phys.: Cond.Matter. 13. 4277-4290 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Terashima: "Magnetoresitance and magnetic susceptibility in CeNiSn"Physica B. 294-295. 245-248 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Umeo: "Pressure-induced magnetic instability in Ce_2Ph_3Ge_5"Phys.Rev.B. 64. 144412-144419 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Umeo: "Non-Fermi Liquid Behavior in Ce_2Ph_3Ge_5 above the Critical Pressure of the Antiferromagnetic Instability"Physica B. (in press). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Umeo et al.: "Magnetic instability in Ce_7Ni_3 studied by low-temperature specific heat and magnetic susceptibility"Physica B. 259-261. 407-408 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Izawa et al.: "Metallic ground state of CeNiSn"Phys. Rev. B. 59. 2599-2603 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Takabatake et al.: "Impurity-induced localization of quasiparticles in the presence of a pseudogap in CeNiSn"Phys. Rev. B. 59. 13878-13881 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Umeo et al.: "Uniaxial-Stress Induced Magnetic Order in CeNiSn"Phys. Rev. B. 60. R6957-R6960 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Z. Hossain et al.: "Antiferromagnetic Kondo-lattice systems Ce_2Rh_3Ge_5 and Ce_2Ir_3Ge_5 with moderate heavy-fermion behavior"Phys. Rev. B. 60. 10383-10387 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Echizen et al.: "Effect of Kondo-hole impurity on the pseudogap in CeNiSn"Physica B. 259-261. 292-293 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. Kadowaki et al.: "Incommensurate Magnetic Structure of the Heavy Fermion Antiferromagnet Ce_7Ni_3"J. Phys. Soc. Jpn.. 69. 2269-2279 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Mishima et al.: "Nuclear magnetic resonance and nuclear quadrupole resonance studies of ^<61>Ni in heavy fermion compound Ce_7Ni_3"J. Appl. Phys.. 87. 5134-5136 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Echizen et al.: "Magnetic ordering in single crystal CeNi_0 _<82>Cu_0 _<18>Sn"Solid State Commun.. 115. 587-591 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Yoshino et al.: "High-field susceptibility of Kondo semimetals CeNiSn and CeRhSb"Physica B. 281&282. 291-293 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Bando et al.: "Thermoelectric power of CeNi_<1-x>T_xSn (T = Co, Cu, Pt) and CeNi_<1-y>La_ySn (x, y = 0.01and 0.05)"Physica B. 281&282. 294-295 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Motoya et al.: "Neutron scattering study of heavy fermion antiferromagnet Ce_7Ni_3 under pressure"J. Magn. Magn. Mater.. 226-230. 137-138 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Schenck et al.: "Muon-spin-rotation study of Ce_7Ni_3 : muon-related and intrinsic properties of the paramagnetic phase"J. Phys. : Cond. Matter. 13. 4277-4290 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Terashima et al.: "Magnetoresitance and magnetic susceptibility in CeNiSn"Physica B. 294-295. 245-248 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Umeo et al.: "Pressure-induced magnetic instability in Ce_2Rh_3Ge_5"Phys. Rev. B. 64. 144412-144419 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Umeo et al.: "Non-Fermi Liquid Behavior in Ce_2Rh_3Ge_5 above the Critical Pressure of the Antiferromagnetic Instability"Physica B. (in press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Umeo: "Pressure-induced magnetic instability in Ce_2Rh_3Ge_5"Phys. Rev. B. 64. 144412-144419 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Schenck: "Muon-spin-rotation study of Ce_7Ni_3:muon-related and intrinsic properties of the paramagnetic phase"J. Phys.:Cond. Matter.. 13. 4277-4290 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Motoya: "Neutron scattering study of heavy fermion antiferromagnet Ce_7Ni_3 under pressure"J. Magn. Magn. Mater.. 226-230. 137-138 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Paschen: "Thermal-transport properties of CeNiSn"J. Magn. Magn. Mater.. 226-230. 57-59 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Terashima: "Magnetoresitance and magnetic susceptibility in CeNiSn"Physica B. 294-295. 245-248 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Mishina: "Nuclear magnetic resonance and nuclear quadrupole resonance studies of ^<61>Ni in heavy fermion compound Ce7Ni3"J.Appl.Phys.. 87・9. 5134-5136 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Echizen: "Magnetic ordering in single crystal CeNi0.82Cu0.18Sn"Solid State Cimmunications. 115. 587-591 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] R.Vollmer: "Low-temperature thermodynamic properties of CeNi1-xCuxSn"Physica B. 307-309. 307-309 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Z.Hossain: "Antiferromagnetic transitions in the Kondo lattice system Ce2Ni3Ge5"Phys.Rev.B. 62・13. 8950-8953 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Kadowaki: "Incommensurate magnetic structure of the heavy fermion antiferromagnet Ce7Ni3"J.Phys.Soc.Japan. 69・7. 2269-2279 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.Paschen: "Thermal-transport properties of CeNiSn"Phys.Rev.B. 62・22. 14912-14919 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Z. Hossain: "Antiferromagnetic Kondo-lattice systems Ce2Rh3Ge5 and Ce2Ir3Ge5 with moderate heavy-fermion behavior"Phys. Rev. B. 60. 10383-10387 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A. Bruckl: "Low temperature specific heat of the Kondo-semimetal CeNiSn in zero and applied magnetic fields"J. Low Temp. Phys.. 115. 291-306 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Umeo: "Uniaxial-stress induced magnetic order in CeNiSn"Phys. Rev. B. 60. R6957-6960 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y. Echizen: "Superconductivity and magnetoresistance in a single-crystal LaNiSn"Solid State Commun.. 111. 153-157 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] F. Iga: "Magnetic excitations in a single crystal of the Kondo semiconductor YbB 12"J. Phys. Chem. Solids. 60. 1193-1196 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Takabatake: "Impurity-induced localization of quasiparticles in the presence of a pseudogap in CeNiSn"Phys. Rev. B. 59. 13878-13881 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] D.T. Adroja: "A study of the first-order valence transition in Ce(Nil-xCox)Sn single crystals by magnetic susceptibility measurements"J. Phys.: Cond. Matter. 11. 543-554 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Yoshino: "Crystal growth and magnetoresistance of a superconductor LaRhSb"J. Phys. Soc. Jpn.. 68. 1456-1457 (1999)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2020-05-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi