论文标题
量子电子液体及其可能的相变
Quantum electron liquid and its possible phase transition
论文作者
论文摘要
纯量子电子系统除了电子 - 电子相互作用外，还通过量子波动表现出有趣的相关电子相。为了实现这种量子电子系统，关键成分是与其他自由度分离的密集电子。在这里，我们报告了纯量子电子液体的发现，该液体在电气晶体表面的真空中扩散到〜3Å。具有极高的电子密度及其与埋入原子轨道的弱杂交证明了电子的量子和纯性，这些量子表现出极化的液相，如我们的自旋依赖性测量所证明的那样。此外，在增强了电子相关强度后，量子电子的动力学会变为非Fermi液体的动力学以及异常的带状变形，这表明过渡到示型液晶相。我们的发现培养了量子电子系统的前沿，并用作纯粹方式探索相关电子相的平台。
Purely quantum electron systems exhibit intriguing correlated electronic phases by virtue of quantum fluctuations in addition to electron-electron interactions. To realize such quantum electron systems, a key ingredient is dense electrons decoupled from other degrees of freedom. Here, we report the discovery of a pure quantum electron liquid, which spreads up to ~ 3 Å in the vacuum on the surface of electride crystal. An extremely high electron density and its weak hybridisation with buried atomic orbitals evidence the quantum and pure nature of electrons, that exhibit a polarized liquid phase as demonstrated by our spin-dependent measurement. Further, upon enhancing the electron correlation strength, the dynamics of quantum electrons changes to that of non-Fermi liquid along with an anomalous band deformation, suggestive of a transition to a hexatic liquid crystal phase. Our findings cultivate the frontier of quantum electron systems, and serve as a platform for exploring correlated electronic phases in a pure fashion.
