Nematicity and Glassy Behavior Probed by Nuclear Magnetic Resonance in Iron-Based Superconductors
Nematicity and Glassy Behavior Probed by Nuclear Magnetic Resonance in Iron-Based Superconductors
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DOI：
10.3389/fphy.2022.877628
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发表时间：
2022-04
期刊：
影响因子：
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通讯作者：
N. Curro;T. Kissikov;M. Tanatar;R. Prozorov;S. Bud’ko;P. Canfield
中科院分区：
文献类型：
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作者：
N. Curro;T. Kissikov;M. Tanatar;R. Prozorov;S. Bud’ko;P. Canfield
核磁共振提供了大量关于铁基超导体的磁自由度和向列相自由度的信息。值得注意的是，自旋晶格驰豫速率是不均匀的，其标准偏差与向列相磁化率有关。此外，自旋晶格弛豫受单轴应变的影响很大，在掺杂样品中，它敏感地依赖于外加应变的历史。这些观察结果表明，与掺杂原子相关的猝灭应变场在铁多肽材料中诱导出向列相玻璃。
Nuclear magnetic resonance provides a wealth of information about the magnetic and nematic degrees of freedom in the iron-based superconductors. A striking observation is that the spin lattice relaxation rate is inhomogeneous with a standard deviation that correlates with the nematic susceptibility. Moreover, the spin lattice relaxation is strongly affected by uniaxial strain, and in doped samples it depends sensitively upon the history of the applied strain. These observations suggest that quenched strain fields associated with doping atoms induce a nematic glass in the iron pnictide materials.