Study of the onset of superconductivity in underdoped La2-xSrxCuO4

Details Study of the onset of superconductivity in underdoped La2-xSrxCuO4 Study of the onset of superconductivity in underdoped La2-xSrxCuO4

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11a3057t&link_type=abstract

New Journal of Physics, Volume 11, Issue 1, pp. 013057 (2009).

Physics

1

Scientific paper

The origin of the appearance of superconductivity in the high-transition-temperature (high-Tc) copper oxides has remained a subject of active inquiry. In order to address this issue, we chose La2-xSrxCuO4 as a model system and succeeded in fine controlling the hole concentration around the composition where Tc appears. Tc did not emerge smoothly at a critical hole concentration, xc. Tc and the absolute value of the Meissner signal below Tc increased progressively with Sr content x>xc. Measurements of magnetization versus temperature under hydrostatic pressure (P) are also reported for La2-xSrxCuO4, which has no charge reservoir. A dTc/dP> 0 found in 0.05

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