] 5 O ct 1 99 9 Vortex core size in 3 He - 4 He filmswithmonolayer superfluid 4 He
نویسندگان
چکیده
The superfluid transition of He-He mixture films adsorbed on alumina powder is studied, with a He superfluid coverage near one layer. With up to 1.3 layers of He added, the transition becomes strongly broadened, indicating a linear increase in the vortex core size for He coverages below one layer. Annealing of the sample mixture at 4.2 K is found to be critically important in ensuring a homogeneous film across the porous substrate.
منابع مشابه
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