Abstract
Hydrostatic pressure effect on superconducting transition temperature and the structural transition temperatures were measured upto 1.0 GPa in the La 1.25 Nd 0.6 Sr 0.15 CuO 4 single crystals. We found that the low temperature tetragonal phase was suppressed with drastic increase of Tc at a low pressure of ~0.1 GPa. By comparing the pressure effect on La 1.48 Nd 0.4 Sr 0.12 CuO 4 single crystals, we confirm that pressure is an effective two-way control parameter for controlling stripes and superconductivity in La-Nd-Sr-Cu-O single crystals.
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