首页> 外文会议>Conference on High Temperature Superconductivity Coral Gables, Florida January 7-13 1999 >Hole doping dependence of the antiferromagnetic correlations in La_(2-x)Sr_xCuO_4 and Y_(1-x)Ca_xSBa_2Cu_3O_6
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Hole doping dependence of the antiferromagnetic correlations in La_(2-x)Sr_xCuO_4 and Y_(1-x)Ca_xSBa_2Cu_3O_6

机译:La_(2-x)Sr_xCuO_4和Y_(1-x)Ca_xSBa_2Cu_3O_6中反铁磁相关性的空穴掺杂依赖性

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By zero field muon spin rotation we studied the antiferromagnetic correlations in the single yaer system La_(2-x)Sr_xCuO_4 and the bilayer compound Y_(1-x)Ca_xBa_2Cu_3O_6. We observe a common phae diagram as a function of hole doping per plane with two distinct transitions of the magnetic ground state. The first transition marks the border between the 3D antiferromagnetic state and a disordered state with short ranged correlations. The second transition coincides with the onset of superconductity and marks a distinct change in the magnetic correlations that coexist with superconductivity. The data are discussed on the basis of a microscopic phase segregation of the doped holes into hole-rich and hole-poor regions.
机译:通过零场介子自旋旋转,我们研究了单Yaer系统La_(2-x)Sr_xCuO_4和双层化合物Y_(1-x)Ca_xBa_2Cu_3O_6中的反铁磁相关性。我们观察到一个共同的相位图,它是每个平面具有两个不同的磁性基态跃迁的空穴掺杂的函数。第一个过渡标志着3D反铁磁状态与具有短程相关性的无序状态之间的边界。第二次跃迁与超导的发生相吻合,标志着与超导共存的磁相关性的明显变化。在掺杂空穴的微观相偏析为空穴富集和空穴贫乏区域的基础上讨论了数据。

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