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High-Tc Superconductors / Intrinsic Josephson Junctions

Doping high-Tc superconductors by carrier injection

Tunnel junction creates hot electrons
Beyond some threshold: electrons (blue) get       trapped in insulating layer
Charge compensation creates holes (red) in       superconducting layer

Fig.1: c-axis resistivity at various doping states after carrier injection

Fig.2: Layered structure of BSCCO
[1] Yuri Koval, Xiaoyue Jin, Christoph Bergmann, Yilmaz Simsek, Lütfi Özyözer, Paul Müller, Huabing Wang, Günter Behr, Bernd Büchner - Tuning superconductivity by carrier injection - Appl. Phys. Lett. 96, 082507 (2010)