C63u NQR Measurement of Stripe Order Parameter in La2-xSrxCuO4

We demonstrate that one can measure the charge-stripe order parameter in the hole-doped CuO2 planes of La1.875Ba0.125CuO4, La1.48Nd0.4Sr0.12CuO4, and La1.68Eu0.2Sr0.12CuO4 utilizing the wipeout effects of 63Cu nuclear quadrupole resonance. Application of the same approach to La2-xSrxCuO4 reveals the presence of similar stripe order for the entire underdoped superconducting regime 116≲x≲18.