We have grown a single crystal of La2-xSrxCuO 4 in which the Sr concentration, x, continuously changes from 0.24 to 0.29 in the overdoped regime and obtained many pieces of single crystals with different x values by slicing the single crystal. From detailed measurements of the magnetic susceptibility, χ, of each piece, it has been found that the absolute value of χ at the measured lowest temperature 2K, |χ2K|, on field cooling rapidly decreases with increasing x as well as the superconducting (SC) transition temperature. As the value of |χ2K| is regarded as corresponding to the SC volume fraction in a sample, it has been concluded that a phase separation into SC and normalstate regions occurs in a sample of La 2-xSrxCuO4 in the overdoped regime.
- Magnetic susceptibility
- Phase separation
- Sr-concentration-gradient single crystal
- Superconducting volume fraction
ASJC Scopus subject areas
- Physics and Astronomy(all)