Incommensurate geometry of the elastic magnetic peaks in superconducting La1.88Sr0.12CuO4

Article

关键词: NEUTRON-SCATTERING;    SPIN CORRELATIONS;    LA2-XSRXCUO4;    ORDER;    FLUCTUATIONS;   

DOI  :  10.1103/PhysRevB.61.14366

来源: SCIE

【 摘 要 】

We report magnetic neutron-scattering measurements of incommensurate magnetic order in a superconducting single crystal of La1.88Sr0.12CuO4. We find that the incommensurate wave vectors which describe the static magnetism do not lie along high-symmetry directions of the underlying CuO2 lattice. The positions of the elastic magnetic peaks are consistent with those found in excess-oxygen doped La2CuO4+y. This behavior differs from the precise magnetic order found in the low-temperature tetragonal LB1.6-xNd0.4SrxCuO4 material for which stripes of spin and charge have been observed. These observations have clear implications for any stripe model proposed to describe the static magnetism in orthorhombic La2CuO4-based superconductors.

【 授权许可】

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