论文标题
“通过固有阴离子疾病在过渡金属氧硝基中引起的电子定位中的样品分类”中的样品分类不正确”
Incorrect sample classification in "Electron localization induced by intrinsic anion disorder in a transition metal oxynitride"
论文作者
论文摘要
在最近对金属 - 绝缘体过渡（MIT）的研究中，Daichi Oka等人的无序结晶固体srnbo $ _ {3-x} $ n $ _x $。 [社区。物理。 4，269（2021）]，数据评估依赖于电子电子相互作用和电子的弹性杂质散射的Al'tshuler-Aronov理论。本评论表明，这种评估方法是不合适的。为此，我们从三个不同的角度重新考虑了$ x = 0.96 $和$ x = 1.02 $的样品的数据：（i）分析电导率的对数温度导数的分析，（ii）对测量电导率数据的偏差的研究，从al'tshuler-aronov的二级值依次（iii iii and As the As the As the As the As and As the As the As the As and As）的偏差进行分析。温度计就该近似值而言。 这样，对于具有$ x = 0.96 $的样品，Daichi Oka等人分类为金属，根据Al'tsshuler-Aronov理论，测量和零温解外推之间的定性矛盾。因此，该样品很可能表现出激活而不是金属传导。因此，我们的发现质疑由高度引用的定位理论产生的麻省理工学院的连续性。
In the recent study of the metal-insulator transition (MIT) in the disordered crystalline solid SrNbO$_{3-x}$N$_x$ by Daichi Oka et al. [Commun. Phys. 4, 269 (2021)], the data evaluation relies on the Al'tshuler-Aronov theory of the interference of electron-electron interaction and elastic impurity scattering of electrons. The present comment shows that this evaluation approach is inappropriate. For that aim, we reconsider data for the samples with $x = 0.96$ and $x = 1.02$ from three different perspectives: (i) analysis of the logarithmic temperature derivative of the conductivity, (ii) study of the deviations of the measured conductivity data from the Al'tshuler-Aronov approximation of the temperature dependence, and (iii) comparison of the measured temperature data with the values obtained treating the sample as secondary thermometer in terms of that approximation. This way, for the sample with $x = 0.96$, classified as metallic by Daichi Oka et al., qualitative contradictions between the measurements and the zero-temperature extrapolation according to the Al'tshuler-Aronov theory are uncovered. Thus, this sample very likely exhibits activated instead of metallic conduction. In consequence, our findings question the continuity of the MIT resulting from the highly cited scaling theory of localization.
