Pressure effect on superconductivity of iron-based arsenic-oxide ReFeAsO0.85 (Re=Sm and Nd)
Here we report pressure effects on the superconducting transition temperature $(T_{{\rm c}})$ of the ReFeAsO0.85 (Re = Sm and Nd) system without fluorine doping. In situ measurements under high pressure showed that $T_{{\rm c}}$ of the two compounds decreases monotonously over the pressure range inv...
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| Veröffentlicht in: | Europhysics letters 2008-09, Vol.83 (5), p.57002-57002(4) |
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| container_end_page | 57002(4) |
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| container_title | Europhysics letters |
| container_volume | 83 |
| creator | Yi, Wei Sun, Liling Ren, Zhian Lu, Wei Dong, Xiaoli Zhang, Hai-jun Dai, Xi Fang, Zhong Li, Zhengcai Che, Guangcan Yang, Jie Shen, Xiaoli Zhou, Fang Zhao, Zhongxian |
| description | Here we report pressure effects on the superconducting transition temperature $(T_{{\rm c}})$ of the ReFeAsO0.85 (Re = Sm and Nd) system without fluorine doping. In situ measurements under high pressure showed that $T_{{\rm c}}$ of the two compounds decreases monotonously over the pressure range investigated. The pressure coefficients ${\rm d}T_{{\rm c}}/{\rm d}P$ in SmFeAsO0.85 and NdFeAsO0.85 were different, revealing the important influence of the deformation in layers on $T_{{\rm c}}$. Theoretical calculations suggested that the electron density of states decreases with increasing pressure, following the same trend of experimental data. |
| doi_str_mv | 10.1209/0295-5075/83/57002 |
| format | Article |
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In situ measurements under high pressure showed that $T_{{\rm c}}$ of the two compounds decreases monotonously over the pressure range investigated. The pressure coefficients ${\rm d}T_{{\rm c}}/{\rm d}P$ in SmFeAsO0.85 and NdFeAsO0.85 were different, revealing the important influence of the deformation in layers on $T_{{\rm c}}$. 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In situ measurements under high pressure showed that $T_{{\rm c}}$ of the two compounds decreases monotonously over the pressure range investigated. The pressure coefficients ${\rm d}T_{{\rm c}}/{\rm d}P$ in SmFeAsO0.85 and NdFeAsO0.85 were different, revealing the important influence of the deformation in layers on $T_{{\rm c}}$. Theoretical calculations suggested that the electron density of states decreases with increasing pressure, following the same trend of experimental data.</abstract><pub>IOP Publishing</pub><doi>10.1209/0295-5075/83/57002</doi></addata></record> |
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| title | Pressure effect on superconductivity of iron-based arsenic-oxide ReFeAsO0.85 (Re=Sm and Nd) |
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