HEAT-TRANSPORT VIA EVAPORATION OF SUPERFLUID-HELIUM FILMS - GIANT EFFECTIVE KAPITZA RESISTANCE

被引：9

作者：

MESTER, JC

MEYER, ES

REYNOLDS, MW

HUBER, TE

SILVERA, IF

机构：

[1] Department of Physics, Harvard University, Cambridge

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.68.3068

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report measurements of heat transport from a solid substrate into a thick superfluid He-4 film at sub-kelvin temperatures. We believe this transport is bottlenecked by the insufficient generation of excitations in the film capable of causing evaporation of atoms. An effective film temperature and an effective Kapitza resistance are defined. The effective Kapitza resistance is more than 3 orders of magnitude larger than for bulk helium, with an exponential temperature dependence.

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页码：3068 / 3071

页数：4

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