Abstract
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.
Similar content being viewed by others
References
Tranquada, J.M., et al.: Nature 375, 15 (1995)
Arai, J., et al.: Low Temp. Phys. 131, 375 (2003)
Hunt, A.W., et al.: Phys. Rev., B 60, 15345 (1999)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hikosaka, K., Arai, J. Mössbauer study of 1/8 anomaly in La2−x Ba x CuO4 . Hyperfine Interact 168, 1171–1174 (2006). https://doi.org/10.1007/s10751-006-9418-y
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10751-006-9418-y