Transport anomalies in the Zn-substituted La_2-xSr_xCu_1-yZn_yO₄ with x ∼ 0.115; Possibility of the pinning of CDW and SDW by Zn

Anomalies in the thermoelectric power and the Hall coefficient, which are analogous to those observed in La_2-xBa_xCuO₄ with x ∼ 1/8, have been observed in the Zn-substituted La_2-xSr_xCu_1-yZn_yO₄ with x = 0.115 and y = 0 - 0.025 and with x = 0.15 and y ∼ 0.02. Based on the so-called stripe model, these are explained as being due to the formation of the static order of the stripe-patterned CDW and SDW on account of the pinning by Zn. Accordingly, the long-standing problem on the conspicuous suppression of superconductivity in the Zn-substituted La_2-xSr_xCu_1-yZn_yO₄ with x ∼ 0.115 is likely to be attributed to this static order.