论文标题
异常金属：从“失败的超导体”到“绝缘体失败”
Anomalous metals: from "failed superconductor" to "failed insulator"
论文作者
论文摘要
在“避免”磁场调节的超导体超导对象转换（H-SIT）的超导和绝缘侧都可以发现电阻率饱和，以二维的/ino $ _x $复合材料中的二维为单位，在此中，异常金属行为降低了电阻率或电阻率在零效率下的电导率或电阻率。材料的颗粒形态意味着约瑟夫森连接系统（JJ）的系统，约瑟夫森耦合e $ _j $和充电能源e $ _c $，由e $ _J $和e $ _c $之间的竞赛确定。由于在真实的H-SIT上的自以为是的，我们调用宏观量子隧穿效应，以解释与温度无关的电阻，其中“失败的超导体”侧是相位波动的结果，而“失败的绝缘体”一侧是电荷波动的结果。尽管在避免过渡中丧失了真实的自伴，但由于基础随机JJ系统中耗散路径的渗透性性质的初步二元性，其遗迹被认为是持续存在的。
Resistivity saturation is found on both superconducting and insulating sides of an "avoided" magnetic-field-tuned superconductor-to-insulator transition (H-SIT) in a two-dimensional In/InO$_x$ composite, where the anomalous metallic behaviors cut off conductivity or resistivity divergence in the zero-temperature limit. The granular morphology of the material implies a system of Josephson junctions (JJ) with a broad distribution of Josephson coupling E$_J$ and charging energy E$_C$ , with a H-SIT determined by the competition between E$_J$ and E$_C$ . By virtue of self-duality across the true H-SIT, we invoke macroscopic quantum tunneling effects to explain the temperature-independent resistance where the "failed superconductor" side is a consequence of phase fluctuations and the "failed insulator" side results from charge fluctuations. While true self-duality is lost in the avoided transition, its vestiges are argued to persist, owing to the incipient duality of the percolative nature of the dissipative path in the underlying random JJ system.
