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Thursday 14 May 2015

Electron pairs can take the heat


Coupling occurs at temperature too high for superconductivity


An electron can be bound to the nucleus of an atom by the attractive Coulomb force. A system of one or more electrons bound to a nucleus is called an atom. If the number of electrons is different from the nucleus' electrical charge, such an atom is called an ion.


Electrons zipping through a thin layer of strontium titanate interact and form pairs at higher temperatures than expected, researchers report in the May 14 Nature. The study is the first definitive evidence of coupled electrons in a solid material too warm for superconductivity, a state in which paired electrons move with no resistance. The research could help scientists better understand how superconductivity emerges and how to get materials to conduct electricity without resistance at or near room temperature.  
                                           

  IN FIGURE: Real Electrons. In the Pipeline



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