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RETRACTION: Josephson junctions with tunable weak links.

J H Schön1, C Kloc, H Y Hwang

  • 1Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974-0636, USA. hendrik@lucent.com

Science (New York, N.Y.)
|April 17, 2001
PubMed
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This summary is machine-generated.

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Researchers can tune organic molecular crystals from insulating to superconducting states using electric fields. This enables the creation of tunable Josephson junctions for superconducting circuits and material studies.

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Organic Electronics

Background:

  • Organic molecular crystals exhibit tunable electrical properties.
  • Electric field application can transition these materials from insulating to superconducting states.

Purpose of the Study:

  • To demonstrate the fabrication of tunable Josephson junctions in organic molecular crystals.
  • To explore the use of these devices for superconducting circuit applications.
  • To utilize these devices as a tool for studying superconducting material parameters.

Main Methods:

  • Structuring gate electrodes in field-effect switches to modulate charge carrier density.
  • Applying gate bias to control coupling between superconducting regions.
  • Utilizing organic molecular crystals like polyacenes and C60.

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Main Results:

  • Demonstrated modulation of charge carrier and superfluid density via gate electrode design.
  • Successfully fabricated weak links behaving as tunable Josephson junctions.
  • Showcased the ability to control coupling between superconducting regions with gate bias.

Conclusions:

  • Organic molecular crystals offer a versatile platform for creating tunable superconducting devices.
  • Field-effect control provides a method for fabricating Josephson junctions in these materials.
  • These devices hold potential for advanced superconducting circuits and fundamental research into superconductivity.