自发日电向列相流体的观测：与Helimagnets的电类比
Observation of Spontaneous Helielectric Nematic Fluids: Electric Analogy to Helimagnets
摘要：
大约一个世纪前，玻恩提出了一种可能的状态物质，铁电流体，如果偶极矩足够强，可能存在。实验实现这种状态需要放大分子极性性质到宏观尺度的液体。在这里，我们报告发现了一种新的手性液体物质状态，被称为手性铁磁，稳定的本地铁电有序耦合到手性螺旋。它携带着螺旋旋转的极矢量，对应于一个太阳电结构，类似于helimagnet的磁性对应物。这种状态可以保持到室温，并表现出巨大的介电和非线性光学响应。这种新颖的物质状态为探索各种铁电液体的物质空间开辟了新的篇章。
英文摘要：
About a century ago, Born proposed a possible matter of state, ferroelectric fluid, might exist if the dipole moment is strong enough. The experimental realisation of such states needs magnifying molecular polar nature to macroscopic scales in liquids. Here, we report on the discovery of a novel chiral liquid matter state, dubbed chiral ferronematic, stabilized by the local ferroelectric ordering coupled to the chiral helicity. It carries the polar vector rotating helically, corresponding to a helieletric structure, analogous to the magnetic counterpart of helimagnet. The state can be retained down to room-temperature and demonstrates gigantic dielectric and nonlinear optical responses. The novel matter state opens a new chapter for exploring the material space of the diverse ferroelectric liquids.
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