论文标题
野外诱导的玻色子绝缘状态在2D超导电子气体中具有强旋转轨道散射
Field-Induced Boson Insulating States in a 2D Superconducting Electron Gas with Strong Spin-Orbit Scatterings
论文作者
论文摘要
在电子掺杂的srtio $ _ {3} $/laalo $ _ {3} $界面中，在实验中观察到的现场诱导的超导体到禁令器的过渡现象，最近通过2D超导体波动理论分析（Phys。B\ textbf i is vettisbf i is vitterbf pextbf i Intface）新见解将其与田间诱导的玻色子绝缘状态低温下的外观相关联。在时间依赖的金茨堡 - 兰道功能方法的框架内，我们将这些状态的起源定位在野外诱导的在较大区域上的波动模式的极端软化，在降低的温度下，这会驱动Cooper Pair Pructuducutupation驱动到实际空间中的库珀pair波动中，以将其浓缩到实际空间中的介质坑洼中。在现象学方法中引入的这些水坑中库珀对波动的动力量子隧穿，该方法闯入移动单电子状态，其中包含由玻色子理论预测的高视野电阻发作。
The phenomenon of field-induced superconductor-to-insulator transitions observed experimentally in electron-doped SrTiO$_{3}$/LaAlO$_{3}$ interfaces, analyzed recently by means of 2D superconducting fluctuations theory (Phys. Rev. B \textbf{104}, 054503 (2021)), is revisited with new insights associating it with the appearance at low temperatures of field-induced boson insulating states. Within the framework of the time-dependent Ginzburg-Landau functional approach, we pinpoint the origin of these states in field-induced extreme softening of fluctuation modes over a large region in momentum space, upon diminishing temperature, which drives Cooper-pair fluctuations to condense into mesoscopic puddles in real space. Dynamical quantum tunneling of Cooper-pair fluctuations out of these puddles, introduced within a phenomenological approach, which break into mobile single-electron states, contains the high-field resistance onset predicted by the exclusive boson theory.
