论文标题
在栅极电压调谐的2D电子液体中，波动的超导性和巨大的负磁度，具有强旋转轨道杂质散射
Fluctuations superconductivity and giant negative magnetoresistance in a gate voltage tuned 2D electron liquid with strong spin-orbit impurity scattering
论文作者
论文摘要
我们列出了栅极调节的超导体到绝缘体转变（SIT）的定量理论，该理论是在Crystalline SRTIO_3和LAALO_3之间（111）界面中产生的2D电子液体中观察到的。考虑了库珀对的两种基本相反的影响；临界电导率增强（称为PARA导电率）及其与由于库珀对形成而导致的未配对电子的抑制作用，我们采用了标准的热波动理论，被修改以在新型的现象学方法中包括量子波动。依靠我们的理论与大量实验表抗性数据之间发现的定量一致性，我们得出结论，旋转轨道散射通过显着增强波动之间的相互作用的显着增强，强烈增强了高场处的板电阻峰值，并揭示了低磁场的异常金属行为，这是由于相对较重的电子带与近乎电子带混合了近浅的电子带。
We present a quantitative theory of the gate-voltage tuned superconductor-to-insulator transition (SIT) observed experimentally in the 2D electron liquid created in the (111) interface between crystalline SrTiO_3 and LaAlO_3 . Considering two fundamental opposing effects of Cooper-pair fluctuations; the critical conductivity enhancement, known as para-conductivity, and its suppression associated with the loss of unpaired electrons due to Cooper-pairs formation, we employ the standard thermal fluctuations theory, modified to include quantum fluctuations within a novel phenomenological approach. Relying on the quantitative agreement found between our theory and a large body of experimental sheet-resistance data, we conclude that spin-orbit scatterings, via significant enhancement of the interaction between fluctuations, strongly enhance the sheet resistance peak at high fields, and reveal anomalous metallic behavior at low fields, due to mixing of relatively heavy electron bands with a light electron band near a Lifshitz point.
