Superconductivity and hole doping in Pr0.5Ca0.5Ba2Cu3O7- thin films

David P. Norton; D. H. Lowndes; B. C. Sales; J. D. Budai; B. C. Chakoumakos; H. R. Kerchner

doi:10.1103/PhysRevLett.66.1537

Superconductivity and hole doping in Pr0.5Ca0.5Ba2Cu3O7- thin films

David P. Norton, D. H. Lowndes, B. C. Sales, J. D. Budai, B. C. Chakoumakos, H. R. Kerchner

Single Crystal Diffraction

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Abstract

We have grown superconducting Pr0.5Ca0.5Ba2Cu3O7- epitaxial thin films that exhibit a superconducting onset temperature of 43 K with Tc(R=0)=34.9 K. This is the first time, to our knowledge, that 1:2:3-phase superconductivity has been achieved by substituting Ca for Pr, without the presence in the alloy of or any other rare-earth element R for which RBa2Cu3O7- is superconducting. This result supports the view that hole localization/filling contributes substantially to the suppression of superconductivity by Pr in PrBa2Cu3O7-, and clearly demonstrates that this suppression can be compensated by appropriate hole doping with Ca.

Original language	English
Pages (from-to)	1537-1540
Number of pages	4
Journal	Physical Review Letters
Volume	66
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.66.1537
State	Published - 1991

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abstract = "We have grown superconducting Pr0.5Ca0.5Ba2Cu3O7- epitaxial thin films that exhibit a superconducting onset temperature of 43 K with Tc(R=0)=34.9 K. This is the first time, to our knowledge, that 1:2:3-phase superconductivity has been achieved by substituting Ca for Pr, without the presence in the alloy of or any other rare-earth element R for which RBa2Cu3O7- is superconducting. This result supports the view that hole localization/filling contributes substantially to the suppression of superconductivity by Pr in PrBa2Cu3O7-, and clearly demonstrates that this suppression can be compensated by appropriate hole doping with Ca.",

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AU - Lowndes, D. H.

AU - Sales, B. C.

AU - Budai, J. D.

AU - Chakoumakos, B. C.

AU - Kerchner, H. R.

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AB - We have grown superconducting Pr0.5Ca0.5Ba2Cu3O7- epitaxial thin films that exhibit a superconducting onset temperature of 43 K with Tc(R=0)=34.9 K. This is the first time, to our knowledge, that 1:2:3-phase superconductivity has been achieved by substituting Ca for Pr, without the presence in the alloy of or any other rare-earth element R for which RBa2Cu3O7- is superconducting. This result supports the view that hole localization/filling contributes substantially to the suppression of superconductivity by Pr in PrBa2Cu3O7-, and clearly demonstrates that this suppression can be compensated by appropriate hole doping with Ca.

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Superconductivity and hole doping in Pr0.5Ca0.5Ba2Cu3O7- thin films

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