Spin dynamics in the low-temperature tetragonal phase of similar or equal to 1/8 doped single crystal La1.67Eu0.2Sr0.13CuO4

Article

关键词: LA-139 NQR;    CUPRATE SUPERCONDUCTORS;    STRIPE CORRELATIONS;    LATTICE RELAXATION;    LA2-XSRXCUO4;    ORDER;    FLUCTUATIONS;    NMR;    LA1.6-XND0.4SRXCUO4;    TRANSITION;   

DOI  :  10.1103/PhysRevB.61.R9265

来源: SCIE

【 摘 要 】

We present La-139 and Cu-63 NMR relaxation measurements in single crystal La1.67Eu0.2Sr0.13CuO4. A strong peak in the La-139 spin-lattice relaxation rate observed in the spin ordered state is well described by the BPP mechanism [Bloembergen, Purcell, and Pound, Phys. Rev. 73, 679 (1948)] and arises from continuous slowing of electronic spin fluctuations with decreasing temperature; these spin fluctuations exhibit XY-like anisotropy in the ordered state. The spin pseudogap is significantly enhanced by the static charge-stripe order in the LTT phase.

【 授权许可】

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