期刊
JOURNAL OF LOW TEMPERATURE PHYSICS
卷 147, 期 5-6, 页码 579-600出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-007-9341-x
关键词
adsorption isotherm; atomic hydrogen; Berezinski-Kozterlitz-Thouless transition; low dimensional gas; ripplon-phonon thermal contact
We describe experiments with spin-polarized atomic hydrogen gas adsorbed on liquid He-4 surface. The surface gas density is increased locally by thermal compression up to 5.5 x 10(12) cm(-2) at 110 mK. This corresponds to the onset of quantum degeneracy with the thermal de-Broglie wavelength being 1.5 times larger than the mean interatomic spacing. The atoms were detected directly with a 129 GHz electron-spin resonance spectrometer probing both the surface and the bulk gas. This and the simultaneous measurement of the recombination power, allowed us to make accurate studies of the adsorption isotherm and the heat removal from the adsorbed hydrogen gas. From the data, we estimate the thermal contact between 2D hydrogen gas and phonons of the helium film. We analyze the limitations of the thermal compression method and the possibility to reach the superfluid transition in 2D hydrogen gas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据