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

1994 Fiscal Year Final Research Report Summary

Semiconducting Ground State in the Kondo-Lattice Compounds

Research Project

Project/Area Number 05452058
Research Category

Grant-in-Aid for General Scientific Research (B)

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

Principal Investigator

TAKABATAKE Toshiro  Fac.Integr.Arts&Sci.Hiroshima University Assoc.Prof., 総合科学部, 助教授 (40171540)

Co-Investigator(Kenkyū-buntansha) SUZUKI T  Hiroshima University, Fac.Science Lecturer, 理学部, 講師 (00192617)
EKINO T  Hiroshima University, Fac.Integr.Arts&Sci., Res.Assoc., 総合科学部, 助手 (40185103)
FUJII H  Hiroshima University, Fac.Integr.Arts&Sci., Prof., 総合科学部, 教授 (30034573)
Project Period (FY) 1993 – 1994
KeywordsKondo Semiconductor / Energy Gap / Single Crystal / Hybridization / Cerium Compounds / Neutron Scattering / Electron Tunneling / Heavy Fermion
Research Abstract

We have studied the mechanism of gap formation in the Kondo semiconductors CeNiSn and CeRhSb by means of bulk and microscopic measurements.
1. Single crystals of CeNin and CeRhSb were grown by the Czochralski and Bridgman methods, respectively. Purification of CeNiSn was performed by the solid-state electrotransport technique.
2. For both the systems, the semiconducting behavior in the low-temperature resistivity is suppressed as the amount of impurities is decreased. This fact and the large enhancement of the carrier mobility support the anisotropic gap in the state density of heavy quasi particles.
3. The common anisotropy in both the resistivity and magnetic susceptibility for the two systems indicates that the gap formation originates from a similar type of hybridization of 4f electronic states with conduction states.
4. The spin excitation spectra obtained from neutron scattering show pronounced peaks at 4 and 2 meV,the former of which is quasi-one-dimensional along the b-axis.
5. The energy gap determined by the tunneling measurements is 8-10 meV for CeNiSn and 20-27 meV for CeNiSn, which value is comparable to the Kondo temperature.

  • Research Products

    (38 results)

All Other

All Publications (38 results)

  • [Publications] T.Takabatake: "Anisutropic Physical Properties of the Kondo Semiconductor CeRhSb" Physical Review B. 50. 623-626 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kadowaki: "Quasi-One-Dimensional Antiferromagnetic Correlation in the Kondo Semiconductor CeNiSn" J.Physical Society of Japan. 63. 2074-2077 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Ekino: "Tunneling Measurements of the Energy Gap in CeRhSb and CeNiSn" Physica B. 837-839 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Takabatake: "Coherence Kondo Gap in CeNiSn and CeRhSb" Physica B. 199&200. 457-462 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Hiess: "Transport Properties of CeNiSn at Low Temperature and in High Magnetic Fields" Physica B. 199&200. 437-439 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kadowaki: "Neutron Diffraction Study of Antiferromagnetic Order in the Kondo Compound CePtSn" J.Phys.Soc.Jpn.62. 4426-4437 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Bando: "Thermopower and Resistivity of CeRhSb and CePtSn" Physica B. 194-196. 1179-1180 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Nishigori: "New Superconductor LaRhSb" Physica B. 184-196. 2071-2072 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Nakamura: "Low-Energy Excitation in Kondo Semiconductors CeNiSn and CeRhSb" J.Phys.Soc.Jpn.63. 433-436 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] F.G.Aliev: "Gapping of the Electronic Spectrum Induced by Magnetic Instability in CeNiSn" Physica B. 199&200. 433-434 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hiraoka: "Pressure Dependence of the Hall Effect in Single Crystals of CeNiSn" Physica B. 199&200. 440-442 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Uwatoko: "Effect of Pressure on the Resistivity in CeRhSb" Physica B. 199&200. 572-574 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] G.Nakamoto: "Effect of Impurity Phases on the Anisotropic Transport Properties of CeNiSn" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Nishigori: "Specific Heat Study on the Energy Gap State in CeRhSb and CeNiSn" Physica B. 199&200. 473-474 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Takabatake: "Gap Formation in Single-Crystal CeRhSb" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Bando: "Suppression of the Energy Gap in CeRhSb by Partial Substitution of Pd for Rh" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.J.Nolten: "Thermal Expansion of the Kondo Insulator CeRhSb" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Nakamura: "NMR/NQR Study of Kondo Semiconductors CeNiSn and CeRhSb" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] G.M.Kalvius.: "Spin Dynamics in CeNiSn and Ce_<0.85>La_<0.15>NiSn at Very Low Temperatures" Physica B. 206&207(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Kadowaki, T.Ekino, H.Iwasaki, T.Takabatake, H.Fujii and J.Sakurai.: "Neutron Diffraction Study of Antiferromagnetic Order in the Kondo Compound GePtSn" J.Phys.Soc.Jpn.62 (12). 4426-4437 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Takabatake, H.Tanaka, Y.Bando, H.Fujii, S.Nishigori, T.Suzuki, T.Fujita and G.kido: "Anisotropic Physical Properties of the Kondo Semiconductor CeRhSb" Phys.Rev.B 50. 623-626 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Bando, T.Takabatake, H.Tanaka, H.Iwasaki, H.Fujii and S.K.Malik: "Thermopower and Resistivity of CeRhSb and CePtSn" Physica. B194-196. 1179-1180 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Nishigori, H.Moriwaki, T.Suzuki, T.Fujita, H.Tanaka, T.Takabatake and H.Fujii: "New Superconductor LaRhSb" Physica. B194-196. 2071-2072 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Nakamura, Y.Kitaoka, K.Asayama, T.Takabatake, H.Tanaka and H.Fujii: "Low-Energy Excitation in Kondo Semiconductors CeNiSn and CeRhSb" J.Phys.Soc.Jpn.63 (2). 433-436 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] F.G.Aliev, R.Villar, S.Vieira, R.V.Scolozdra and T.Takabatake: "Gapping of the Electronic Spectrum Induced by Magnetic" Physica. B199&200. 433-434 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Hliess, C.Geibel, G.Spran, C.D.Bredi, F.Steglich, T.Takabatake and H.Fujii: "Transport Properties of CeNiSn at Low Temperatures and High Magnetic Fields" Physica. B199&200. 437-439 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Hiraoka, E.Kinoshita, T.Takabatake, H.Tanaka and H.Fujii: "Pressure Dependence of the Hall Effect in Single Crystals of CeNiSn" Physica. B199&200. 440-442 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Takabatake, G.Nakamoto, H.Tanaka, Y.Bando, H.Fujii, S.Nishigori, H.Goshima, T.Suzuki, T.Fujita, I.Oguro, T.Hiraoka and S.K.Malik: "Coherence Kondo Gap in CeNiSn and CERhSb" Physica. B199&200. 457-462 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Nishigori, T.Suzuki, T.Fujita, H.Tanaka, T.Takabatake and H.Fujii: "Specific Heat Study on the Energy Gap State in CeRhSb and CeNiSn" Physica. B199&200. 473-474 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Uwatoko, G.Oomi, S.K.Malik, T.Takabatake and H.Fujii: "Effect of Pressure on the Resistivity in CeRhSb" Physica. B199&200. 572-574 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Kadowaki, T.Sato, H.Yoshizawa, T.Ekino, T.Takabatake, H.Fujii, L.P.Regnault and Y.Ishikawa: "Quasi-One-Dimensional Antiferromagnetic Correlation in the Kondo Semiconductor CeNiSn" J.Phys.Soc.Jpn.63 (3). 2074-2077 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G.Nakamoto, T.Takabatake, Y.Bando, H.Fujii, K.Izawa, T.Suzuki, T.Fujita, A.Minami, I.Oguro, L.T.Tai and A.A.Menovsky: "Effect of Impurity Phases on the Anisotropic Transport Properties of CeNiSn" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Takabatake, T.Yoshino, H.Tanaka, Y.Bando, H.Fujii, T.Fujita, H.Shida and T.Suzuki: "Gap Formation in Single-Crystal CeRhSb" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Bando, T.Takabatake, H.Fujii and G.Kido: "Suppression of the Energy Gap in CeRhSb by Partial Substitution of Pd for Rh" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.J.Nolten, A.de Visser, F.E.Kayzel, J.J.M.Franse, H.Tanaka and T.Takabatake: "Thermal Expansion of the Kondo Insulator CeRhSb" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Nakamura, Y.Kitaoka, K.Asayama, T.Takabatake, G.Nakamoto, H.Tanaka and H.Fujii: "NMR/NQR Study of Kondo Semiconductors CeNiSn and CeRhSb" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Ekino, T.Takabatake, H.Tanaka and H.Fujii: "Tunneling Measurements of the Energy Gap in CeRhSb and CeNiSn" Physica. B206&207. 837-839 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] G.M.Kalvius, A.Kratzer, R.Wappling, T.Takabatake, G.Nakamoto, H.Fujii, R.F.Kiefl and S.R.Kreitzmann: "Spin Dynamics in CeNiSn and Ce_<0.85>La_<0.15>NiSn at very Low Temperatures" Physica. B206&207. (1995)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1996-04-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi