Hyperfine Interactions

, Volume 168, Issue 1–3, pp 1171–1174 | Cite as

Mössbauer study of 1/8 anomaly in La2−x Ba x CuO4



The measurements of Mössbauer effect, magnetic susceptibility and muon spin relaxation have been carried out for the high-T c superconductor La2−x Ba x CuO4. The intensity of Mössbauer doublet spectrum of the sample of x∼1/8 begins to decrease rapidly at a certain temperature T m, which we define as a magnetic transition temperature T Möss. This temperature almost agrees with T μSR determined from muon spin relaxation. The quadrupole doublet disappears at low temperature below T m but a clearly splitted spectrum is not observed even at 4.2 K, which indicates a peculiar magnetic state with a wide distribution of internal magnetic field. Around x∼1/8, the superconducting critical temperature T c and T m are competed each other. In conclusion, superconductivity disappears around 1/8 hole concentration and a peculiar magnetic state such as spin density wave appears.

Key words

high-Tc superconductor 1/8 anomaly 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Tranquada, J.M., et al.: Nature 375, 15 (1995)CrossRefGoogle Scholar
  2. 2.
    Arai, J., et al.: Low Temp. Phys. 131, 375 (2003)CrossRefGoogle Scholar
  3. 3.
    Hunt, A.W., et al.: Phys. Rev., B 60, 15345 (1999)CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  1. 1.Department of Physics, Faculty of Science and TechnologyTokyo University of ScienceChibaJapan

Personalised recommendations