Figure 2. According to the thermal decoupling model, the effective temperature of barium (Ba) in YBCO is relatively high, meaning that the distance between Ba and the underlying superconducting CuO₂ plane (arrows in the right-hand figure) (IMAGE)
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Figure 2. According to the thermal decoupling model, the effective temperature of barium (Ba) in YBCO is relatively high, meaning that the distance between Ba and the underlying superconducting CuO₂ plane (arrows in the right-hand figure) is expected to influence the critical temperature (Tc, left-hand figure).
Remarkably, as shown in the left graph, experimental data from three independent research groups demonstrate that the variation in Ba–CuO₂ distance (red, yellow, and blue points) with doping concentration matches precisely with the variation in critical temperature (black points).
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© Materials Today Physics, originally published in Materials Today Physics
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