Publikation:

Microwave study of screened two-dimensional electron crystals on helium films

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213_physrevB_1997.pdf
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1997

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Mistura, Giampaolo
Günzler, Tobias
Neser, Stephan

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Physical Review B. 1997, 56(13), pp. 8360-8366. Available under: doi: 10.1103/PhysRevB.56.8360

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We report investigations at microwave frequencies on surface-state electrons (SSE) which were supported by helium films adsorbed on different polymer substrates at temperatures above 1 K. The real and imaginary parts of the dielectric response e (k,w) of the SSE were measured at fixed k and v inside a 10 GHz microwave cavity. The solidification of the two-dimensional electron crystal was detected by a kink occurring simultaneously in both components of e (k,w) as the electron density was slowly increased at constant temperature. The influence of the dielectric substrate on such a freezing transition has been measured at different temperatures and at various helium-film thicknesses. The results are found to be in good agreement with existing theories. This work represents the first systematic study of a screened two-dimensional electron crystal on helium.

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ISO 690MISTURA, Giampaolo, Tobias GÜNZLER, Stephan NESER, Paul LEIDERER, 1997. Microwave study of screened two-dimensional electron crystals on helium films. In: Physical Review B. 1997, 56(13), pp. 8360-8366. Available under: doi: 10.1103/PhysRevB.56.8360
BibTex
@article{Mistura1997Micro-8870,
  year={1997},
  doi={10.1103/PhysRevB.56.8360},
  title={Microwave study of screened two-dimensional electron crystals on helium films},
  number={13},
  volume={56},
  journal={Physical Review B},
  pages={8360--8366},
  author={Mistura, Giampaolo and Günzler, Tobias and Neser, Stephan and Leiderer, Paul}
}
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