论文标题
量子指标的巨大提升一维平坦带系统
Giant boost of the quantum metric in disordered one dimensional flat band systems
论文作者
论文摘要
众所周知的事实是，该疾病对一维系统中常规量子传输的影响最大。在平面频带（FB）系统中，据揭示了FB能量的电导率对疾病具有鲁棒性，甚至可以大大提高。此外，挑战我们对物理现象的理解，巨大的增加发生在低FB状态密度的极限下。发现FB特征状态的量子指标的奇异行为是这些意外和令人困惑的特征的核心。我们的发现应该对其他物理系统产生有趣的后果，并且还可以开放工程策略，以在二维超导FB材料中提高临界温度。
It is a well known fact, that the disorder has its most dramatic effects on the conventional quantum transport in one dimensional systems. In flat band (FB) systems, it is revealed that the conductivity at the FB energy is robust against the disorder and can even be tremendously boosted. Furthermore, challenging our understanding of the physical phenomena, the giant increase occurs in the limit of low FB states density. The singular behaviour of the quantum metric of the FB eigenstates is found to be at the heart of these unexpected and puzzling features. Our findings should have interesting fallout for other physical systems, and may as well open up engineering strategies to boost the critical temperature in two dimensional superconducting FB materials.
