Fantastic Behavior of High-TC Superconductor Junctions: Tunable Superconductivity

Details Fantastic Behavior of High-TC Superconductor Junctions: Tunable Superconductivity Fantastic Behavior of High-TC Superconductor Junctions: Tunable Superconductivity

2009-01-06

arxiv.org/abs/0901.0594v1

CHIN.PHYS.LETT. Vol 26,No.1(2009)017305

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

10.1088/0256-307X/26/1/017305

Carrier injection performed in oxygen-deficient YBa2Cu3O7(YBCO) hetero-structure junctions exhibited tunable resistance that was entirely different with behaviors of semiconductor devices. Tunable superconductivity in YBCO junctions, increasing over 20 K in transition temperature, has achieved by using electric processes. To our knowledge, this is the first observation that intrinsic property of high TC superconductors superconductivity can be adjusted as tunable functional parameters of devices. The fantastic phenomenon caused by carrier injection was discussed based on a proposed charge carrier self-trapping model and BCS theory.

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