Journal
EPL
Volume 83, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/83/57002
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Funding
- National Science Foundation of China [50571111, 10734120]
- Ministry of Science and Technology of China [2005CB724400, 2006CB601001, 2007CB925002]
- EU
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Here we report pressure effects on the superconducting transition temperature (T-c) of the ReFeAsO0.85 (Re = Sm and Nd) system without fluorine doping. In situ measurements under high pressure showed that Tc of the two compounds decreases monotonously over the pressure range investigated. The pressure coeffcients dT(c)/dP in SmFeAsO0.85 and NdFeAsO0.85 were different, revealing the important influence of the deformation in layers on Tc. Theoretical calculations suggested that the electron density of states decreases with increasing pressure, following the same trend of experimental data. Copyright (c) EPLA, 2008.
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