Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+δ}$台面强驱动本征结加热的反直觉结果
Comment on Counterintuitive consequence of heating in strongly driven intrinsic junctions of Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ mesas
摘要：
在最近的论文[Phys.Rev.B 81，224518（2010）]中，C. Kurter等人分析了大面积Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+δ}$（Bi-2212）台面结构中的强自加热效应。他们的结论是，当台面被加热到超导临界温度$T_c$时，台面中的$dI/dV$电导峰出现。进一步，他们将这一说法推广到所有台面，包括用于本征隧道光谱（ITS）的更小、更好的热锚定台面。在这里，我表明，他们的结论不成立，既不为以前报道的数据，甚至为自己的台地;非常遥远的外推ITS是无效的。我还指出了一些前后矛盾和误导性的提法。
英文摘要：
In a recent paper [Phys.Rev.B 81, 224518 (2010)], C. Kurter et al, analyzed the effect of strong self-heating in large-area Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ (Bi-2212) mesa structures. They conclude that $dI/dV$ conductance peaks in their mesas occur when mesas are heated to the superconducting critical temperature $T_c$. Further on they extrapolate this statement for all mesas, including much smaller and much better thermally anchored mesas used in Intrinsic Tunnelling Spectroscopy (ITS). Here I show that their conclusion does not hold neither for previously reported data, nor even for their own mesas; the very remote extrapolation to ITS is invalid. I also point out a number of inconsistencies and misleading references.
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