Impurity position and lattice distortion in a Mn-doped Bi2Te3 topological insulator investigated by x-ray fluorescence holography and x-ray absorption fine structure

2017 ◽  
Vol 96 (21) ◽  
Author(s):  
Shinya Hosokawa ◽  
Jens Rüdiger Stellhorn ◽  
Tomohiro Matsushita ◽  
Naohisa Happo ◽  
Koji Kimura ◽  
...  
2013 ◽  
Vol 20 (3) ◽  
pp. 455-459 ◽  
Author(s):  
Jie Cheng ◽  
Peng Dong ◽  
Wangsheng Chu ◽  
Wei Xu ◽  
Haihu Wen ◽  
...  

To clarify the contrasting impurity effects of Mn and Zn dopants on the critical temperature of optimally doped Ba0.5K0.5Fe2As2superconductors, extended X-ray absorption fine-structure spectroscopy was implemented at the Fe and AsK-edge. In Mn-doped compounds a gradual deviation of the symmetric FeAs4tetrahedron and weakening of the Fe—As bond was observed. Conversely, in Zn-doped compounds the perfect FeAs4tetrahedron is maintained and the Fe—As bond is rigid. The local structural details are consistent with the development of superconductivity in these two systems, suggesting a significant role played by the topology of the FeAs4tetrahedron and rigidness of the Fe—As bond in Mn/Zn-doped Ba0.5K0.5Fe2As2superconductors.


2001 ◽  
Vol 63 (4) ◽  
Author(s):  
D. De Salvador ◽  
M. Tormen ◽  
M. Berti ◽  
A. V. Drigo ◽  
F. Romanato ◽  
...  

2010 ◽  
Vol 405 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Athipong Ngamjarurojana ◽  
La-Ongnuan Srisombat ◽  
Rattikorn Yimnirun ◽  
Supon Ananta

2012 ◽  
Vol 112 (11) ◽  
pp. 113519 ◽  
Author(s):  
Shaojie Fang ◽  
Zhiyong Pang ◽  
Yonghua Du ◽  
Lirong Zheng ◽  
Xijian Zhang ◽  
...  

2000 ◽  
Vol 454-456 ◽  
pp. 723-728 ◽  
Author(s):  
H. Magnan ◽  
P. Le Fèvre ◽  
A. Midoir ◽  
D. Chandesris ◽  
H. Jaffrès ◽  
...  

Author(s):  
Kazumasa Murata ◽  
Junya Ohyama ◽  
Atsushi Satsuma

In the present study, the redispersion behavior of Ag particles on ZSM-5 in the presence of coke was observed using in situ X-ray absorption fine structure (XAFS) spectroscopy.


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