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19 April 2024 |
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Article overview
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Correlation between superconductivity and antiferromagnetism in Rb0.8Fe2Se2-xTex single crystals | Dachun Gu
; Liling Sun
; Qi Wu
; Chao Zhang
; Jing Guo
; Peiwen Gao
; Yue Wu
; Xiaoli Dong
; Xi Dai
; Zhongxian Zhao
; | Date: |
24 Jul 2011 | Abstract: | We report the first experimental evidence for the intimate connection between
superconductivity and antiferromagnetism in Rb0.8Fe2Se2-xTex single crystal
under negative chemical pressure by substituting Se with isovalent Te atoms.
Electrical resistance measurements in the temperature range from 4 K to 550 K
demonstrate that both superconducting transition temperature (Tc) and Neel
temperature (TN) were suppressed continuously with the lattice expansion. When
the Te concentration x in Rb0.8Fe2Se2-xTex approaches 0.3, the superconducting
transition temperature Tc is completely suppressed and the sample behaves like
a semiconductor, meanwhile the characteristic peak of antiferromagnetic
transition on resistance curve disappears. Our observation suggests that the
pressure-induced lattice expansion can be used to tune the correlativity of
superconductivity and antiferromagnetism. | Source: | arXiv, 1107.4719 | Services: | Forum | Review | PDF | Favorites |
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