Te1−xSexIron isotope effect on the superconducting transition temperature and the crystal structure of FeSe1−x
Source: New J. Phys. 12, 073024 (2010); doi:10.1088/1367-2630/12/7/073024
Issue Date: 15 August 2010
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IOP Publishing
The Fe isotope effect (Fe-IE) on the transition temperature Tc and the crystal structure was studied in the Fe chalcogenide superconductor FeSe1−x by means of magnetization and neutron powder diffraction (NPD). The substitution of natural Fe (containing 
92% of 56Fe) by its lighter 54Fe isotope leads to a shift in Tc of 0.22(5) K corresponding to an Fe-IE exponent of 
Fe=0.81(15). Simultaneously, a small structural change with isotope substitution is observed by NPD, which may contribute to the total Fe isotope shift of Tc.
©2010
92% of 56Fe) by its lighter 54Fe isotope leads to a shift in Tc of 0.22(5) K corresponding to an Fe-IE exponent of Fe=0.81(15). Simultaneously, a small structural change with isotope substitution is observed by NPD, which may contribute to the total Fe isotope shift of Tc.
©2010
(As supplied by publisher.)
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