Comprehensive phase diagram of two-dimensional space charge doped Bi2Sr2CaCu2O8+x

Edoardo Sterpetti, Johan Biscaras, Andreas Erb and Abhay Shukla ()
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Edoardo Sterpetti: Sorbonne Universités, Université Pierre et Marie Curie Paris 6
Johan Biscaras: Sorbonne Universités, Université Pierre et Marie Curie Paris 6
Andreas Erb: Bayerische Akademie der Wissenschaften
Abhay Shukla: Sorbonne Universités, Université Pierre et Marie Curie Paris 6

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract The phase diagram of hole-doped high critical temperature superconductors as a function of doping and temperature has been intensively studied with chemical variation of doping. Chemical doping can provoke structural changes and disorder, masking intrinsic effects. Alternatively, a field-effect transistor geometry with an electrostatically doped, ultra-thin sample can be used. However, to probe the phase diagram, carrier density modulation beyond 1014 cm−2 and transport measurements performed over a large temperature range are needed. Here we use the space charge doping method to measure transport characteristics from 330 K to low temperature. We extract parameters and characteristic temperatures over a large doping range and establish a comprehensive phase diagram for one-unit-cell-thick BSCCO-2212 as a function of doping, temperature and disorder.

Date: 2017
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DOI: 10.1038/s41467-017-02104-z

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