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Photoinduced superconducting nanowires in Gd-Ba-Cu-O films

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arxiv cond-mat/9803056 v1 pith:PHRGMOVS submitted 1998-03-04 cond-mat.supr-con cond-mat.mes-hall

R. S. Decca , H. D. Drew , B. Maiorov , J. Guimpel , E. Osquiguil This is my paper · ORCID
classification cond-mat.supr-concond-mat.mes-hall
keywords electronnanowiresphotogeneratedsuperconductingwiresbeforebelievedcapture
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We report the fabrication of high Tc superconducting wires by photodoping a GdBa2Cu3O{6.5} thin film. An optical near-field probe was used to locally excite carriers in the system at room temperature. Trapping of the photogenerated electrons define a confining potential for the conducting holes in the CuO planes. Spatially resolved reflectance measurements show the photogenerated nanowires to be ~ 250 nm wide. Electron diffusion, before electron capture, is believed to be responsible for the observed width of the wires.

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