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Title

Electrochemical Tuning of Metal Insulator Transition and Nonvolatile Resistive Switching in Superconducting Films

AuthorsPalau, Anna ; Fernández Rodríguez, Alejandro; Gonzalez Rosillo, Juan Carlos ; Granados, Xavier ; Coll, Mariona ; Bozzo, Bernat ; Ortega Hernandez, Rafael; Suñé, Jordi; Mestres, Narcís ; Obradors, Xavier ; Puig Molina, Teresa
KeywordsElectrochemical oxygen doping
Strongly correlated oxides
Metal-insulator transition
Reversible switching
High temperature superconductors
Issue Date12-Sep-2018
PublisherAmerican Chemical Society
CitationACS Applied Materials and Interfaces 10(36): 30522-30531 (2018)
AbstractModulation of carrier concentration in strongly correlated oxides offers the unique opportunity to induce different phases in the same material, which dramatically change their physical properties, providing novel concepts in oxide electronic devices with engineered functionalities. This work reports on the electric manipulation of the superconducting to insulator phase transition in YBa2Cu3O7−δ thin films by electrochemical oxygen doping. Both normal state resistance and the superconducting critical temperature can be reversibly manipulated in confined active volumes of the film by gate-tunable oxygen diffusion. Vertical and lateral oxygen mobility may be finely modulated, at the micro- and nano-scale, by tuning the applied bias voltage and operating temperature thus providing the basis for the design of homogeneous and flexible transistor-like devices with loss-less superconducting drain–source channels. We analyze the experimental results in light of a theoretical model, which incorporates thermally activated and electrically driven volume oxygen diffusion.
Publisher version (URL)http://dx.doi.org/10.1021/acsami.8b08042
URIhttp://hdl.handle.net/10261/173969
ISSN1944-8244
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