论文标题
Chester在双层半导体异质结构中空间间接激子的超固体
Chester supersolid of spatially indirect excitons in double-layer semiconductor heterostructures
论文作者
论文摘要
超直觉的量子状态，其中颗粒的刚性晶格没有抵抗，迄今为止尚未明确实现。在这里，我们在双层半导体异质结构中揭示了激子在最近实验重点之外的层次分离上的超固体基态。这种超olid剂符合原始的切斯特超固体，并与每个超固体位点的一个激子相符合，这与超级流体密度定期调制的冷原子系统中报道的替代版本不同。我们提供了超固体增强的相图。这个新阶段出现在层分离上，远小于预测的激子正常固体，并且持续到固体 - 固定过渡，其中量子相一致性崩溃了。当前的实验能力范围内，我们的相图中层分离和激子密度的范围很远。
A supersolid, a counter-intuitive quantum state in which a rigid lattice of particles flows without resistance, has to date not been unambiguously realised. Here we reveal a supersolid ground state of excitons in a double-layer semiconductor heterostructure over a wide range of layer separations outside the focus of recent experiments. This supersolid conforms to the original Chester supersolid with one exciton per supersolid site, as distinct from the alternative version reported in cold-atom systems of a periodic modulation of the superfluid density. We provide the phase diagram augmented by the supersolid. This new phase appears at layer separations much smaller than the predicted exciton normal solid, and it persists up to a solid--solid transition where the quantum phase coherence collapses. The ranges of layer separations and exciton densities in our phase diagram are well within reach of the current experimental capabilities.
