Quantum plasticity and supersolid response in helium-4
Quantum plasticity and supersolid response in helium-4
复制标题
氦 4 中的量子可塑性和超固体响应
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
B. Svistunov
中科院分区：
文献类型：
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作者：
A. Kuklov;L. Pollet;N. Prokof’ev;B. Svistunov
我们认为，最近在固体$^4$He中观察到的三个关键现象-质量超输运、异常等容压缩性（注射器效应）和巨塑性-通过倾斜量子粗糙位错的互连网络物理学相互紧密联系。作为这种联系的直接影响，几个预言如下：在没有$^3 $He杂质的情况下，注射器效应和巨塑性持续到$T=0$，动态低频注射器和巨塑性响应是无色散的;类似于巨塑性但与沿位错核沿着的超输运没有直接关系，$^3$He杂质应在适当的低温下部分或完全抑制注射器效应。
We argue that the three key phenomena recently observed in solid $^4$He---mass supertransport, anomalous isochoric compressibility (syringe effect), and giant plasticity---are closely linked to each other through the physics of an interconnected network of tilted quantum-rough dislocations. As immediate implications of this connection several predictions follow: In the absence of $^3$He impurities, the syringe effect and giant plasticity persist down to $T=0$; the dynamical low-frequency syringe and giant-plasticity responses are dispersionless; and similarly to giant plasticity but without direct relationship to the supertransport along the dislocation cores, $^3$He impurities should suppress the syringe effect partially or completely at appropriately low temperatures.