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arXiv 1707.02119cond-mat.mes-hallcond-mat.other
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液氦上电子的能级随温度的变化

Temperature Dependent Energy Levels of Electrons on Liquid Helium

E. Collin, W. Bailey, P. Fozooni, P. G. Frayne, P. Glasson, K. Harrabi, M. J. Lea

摘要:

我们提出了测量共振微波吸收的里德伯能级的表面态电子的表面上的超流液氦,在频率范围165 - 220 GHz。在0.1 ~ 2K范围内,共振频率与温度有很强的依赖关系.的实验是在最近的理论计算的重整化的电子能级由于零点和热涟漪,类似于凝聚态兰姆位移。与其他测量和理论预测相比,在189.6 GHz的第一激发态的激发线宽的温度依赖性的贡献。

英文摘要:

We present measurements of the resonant microwave absorption by the Rydberg energy levels of surface state electrons on the surface of superfluid liquid helium, in the frequency range 165 - 220 GHz. The resonant frequency was strongly temperature dependent from 0.1 to 2 K. The experiments are in agreement with recent theoretical calculations of the renormalisation of the electron energy levels due to zero-point and thermal ripplons, analogous to a condensed matter Lamb shift. The temperature-dependent contribution to the linewidth for excitation to the first excited state at 189.6 GHz is compared with other measurements and theoretical predictions.

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