Dynamics of Local Bond Correlations in FeSexTe1−x by Inelastic Neutron Scattering

被引：0
|
作者：
Keeseong Park
Jon W. Taylor
Despina Louca
机构：
[1] University of Virginia,Department of Physics
[2] Rutherford Appleton Laboratory,ISIS Spallation Neutron Source
来源：
Journal of Superconductivity and Novel Magnetism | 2014年 / 27卷
关键词：
Local dynamics; Atomic correlations; Superconductivity; Fe-based supersconductors;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The dynamics of the local atomic pair correlations in the FeSexTe1−x ( x = 0.1, 0.5, and 0.9) system were investigated using the dynamic pair density function analysis obtained from inelastic neutron scattering. Distinct differences are observed between the superconducting and nonsuperconducting compositions, particularly involving the local dynamics of the Fe-Fe correlations. The energy scale of the observed differences is between 25 and 30 meV. In the nonsuperconducting FeSe0.1Te0.9, the Fe-Fe correlations are enhanced with cooling that may signal stronger exchange interactions, while in the superconducting compositions of FeSe0.9Te0.1 and FeSe0.5Te0.5, they are suppressed.
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页码：1927 / 1934
页数：7
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