论文标题
平面带和超金属性中的量子运输
Quantum transport in flat bands and super-metallicity
论文作者
论文摘要
平面（FB）系统中的量子物理学体现了各种外来现象，甚至相反的直觉特征。研究了几种基于石墨烯的化合物中表现出平坦带和可调间隙的量子传输。尽管FB状态的局部性质和零组速度，但FB能量处的超级金属（SM）相仍显示出来。 SM相对于非弹性散射强度具有鲁棒性，仅由FB和分散带之间的带间跃迁控制。 SM相显着敏感，准确与晶格的间隙幅度和性质无关（无序或纳米图案）。 Lieb晶格中的电子情况说明了非常规FB转运的普遍性质。
Quantum physics in flat-band (FB) systems embodies a variety of exotic phenomenon and even counter intuitive features. The quantum transport in several graphene based compounds that exhibit a flat band and a tunable gap is investigated. Despite the localized nature of the FB states and a zero group velocity, a super-metallic (SM) phase at the FB energy is revealed. The SM phase is robust against the inelastic scattering strength and controlled only by the inter-band transitions between the FB and the dispersive bands. The SM phase appears insensitive and quasi independent of the gap amplitude and nature of the lattice (disordered or nano-patterned). The universal nature of the unconventional FB transport is illustrated with the case of electrons in the Lieb lattice.
