受限几何中的超固态行为
Supersolid behavior in confined geometry
摘要：
我们已经进行了扭转振荡器（TO）和热容（HC）测量固体4He样品内生长的几何形状，限制了薄（150 μ m）的圆柱形磁盘的氦。与先前报道的Rittner和Reppy的20%非经典转动惯量（NCRI）的值相比，对于类似的限制尺寸，在我们的TO电池中观察到0.9%的NCRI（与在散装样品和嵌入多孔介质的样品中发现的一致）。在这种受限的几何形状中，热容峰与在高结晶质量的块状固体样品中发现的热容峰一致。
英文摘要：
We have carried out torsional oscillator (TO) and heat capacity (HC) measurements on solid 4He samples grown within a geometry which restricts the helium to thin (150 um) cylindrical discs. In contrast to previously reported values from Rittner and Reppy of 20% non-classical rotational inertia (NCRI) for similar confining dimensions, 0.9% NCRI (consistent with that found in bulk samples and samples imbedded in porous media) was observed in our TO cell. In this confined geometry the heat capacity peak is consistent with that found in bulk solid samples of high crystalline quality.
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