Spatially Selective and Reversible Doping Control in Cuprate Films

Details Spatially Selective and Reversible Doping Control in Cuprate Films Spatially Selective and Reversible Doping Control in Cuprate Films

2005-08-10

arxiv.org/abs/cond-mat/0508252v1

Appl. Phys. Lett. 87, 231911 (2005)

Physics

Condensed Matter

Superconductivity

14 pages, 4 figures

Scientific paper

10.1063/1.2138356

We describe a reversible, spatially-controlled doping method for cuprate films. The technique has been used to create superconductor-antiferromagnetic insulator-superconductor (S-AFI-S) junctions and optimally doped superconductor-underdoped superconductor-optimally doped superconductor (OS-US-OS) cuprate structures. We demonstrate how the S-AFI-S structure can be employed to reliably measure the transport properties of the antiferromagnetic insulator region at cryogenic temperatures using the superconductors as seamless electrical leads. We also discuss applied and fundamental issues which may be addressed with the structures created with this doping method. Although it is implemented on a cuprate film (YBa2Cu3O7-delta) in this work, the method can also be applied to any mixed-valence transition metal oxide whose physical properties are determined by oxygen content.

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