Superconductor On-Off Switch | December 8, 2008 Issue - Vol. 86 Issue 49 | Chemical & Engineering News
 
 
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Volume 86 Issue 49 | p. 30 | Concentrates
Issue Date: December 8, 2008

Superconductor On-Off Switch

European scientists show that an electric field can turn on and off superconductivity in a fabricated circuit
Department: Science & Technology

European scientists have demonstrated that an electric field can turn on and off low-temperature superconductivity in a fabricated circuit (Nature 2008, 456, 624). This new capability is expected to lead to nanoscale superconducting (resistance-free) circuits that can be controlled by strategically located electric-field modulators. These scientists previously discovered that at the interface between two layers of oxide insulators, LaAlO3 and SrTiO3, a superconducting "electron gas" forms. Now, Andrea D. Caviglia and

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