Emergent high-Tc ferroelectric ordering of strongly correlated and frustrated protons in a heteroepitaxial ice film
Emergent high-Tc ferroelectric ordering of strongly correlated and frustrated protons in a heteroepitaxial ice film
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DOI：
10.1038/nphys3820
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发表时间：
2016-07
期刊：
影响因子：
19.6
通讯作者：
T. Sugimoto;Norihiro Aiga;Yuji Otsuki;Kazuya Watanabe;Y. Matsumoto
中科院分区：
文献类型：
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作者：
T. Sugimoto;Norihiro Aiga;Yuji Otsuki;Kazuya Watanabe;Y. Matsumoto
包含强相关性和挫折的材料有可能以不寻常的方式对外部扰动做出反应。在普通水冰的情况下，氢键网络中的质子是强相关的，并且在鲍林冰规则下高度受挫。在低温下，强关联的质子失去遍历性，很少有人了解合作的热力学和电响应外部刺激。在这里，使用一个模型铂衬底，我们展示了紧急高Tc铁电质子在异质外延冰膜订购。这种质子有序是热力学稳定的，并且具有极高的临界温度，为175K。我们发现，在异质界面的电统计驱动的各向异性和质子分解是刺激这种新的异国情调的有序多体关联质子系统的关键因素。由于异质界面，Tc的显著增加表明铁电冰在自然界中无处不在，特别是在太空和极地平流层中。
Materials containing strong correlation and frustration have the potential to respond to external perturbations in an unusual way. In the case of common water ice, protons in the hydrogen-bond network are strongly correlated and highly frustrated under Pauling’s ice rules. At low temperature, the strongly correlated protons lose ergodicity, and little is understood about the cooperative thermodynamic and electric response to external stimuli. Here, using a model platinum substrate, we demonstrate emergent high-Tcferroelectric proton ordering in a heteroepitaxial ice film. Such proton ordering is thermodynamically stable and has an extremely high critical temperature of ∼175 K. We found that anisotropy and protolysis driven by the electrostatistics at the heterointerface are key factors in stimulating this novel exotic ordering in the many-body correlated proton system. The significant increase inTcdue to the heterointerface suggests the ubiquity of ferroelectric ice in nature—specifically, in space and the polar stratosphere.