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Evidence for a superfluid-induced surface barrier for electrons in liquid helium

URN to cite this document:
urn:nbn:de:bvb:355-epub-188909
DOI to cite this document:
10.5283/epub.18890
Schoepe, Wilfried ; Probst, C.
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Date of publication of this fulltext: 23 Dec 2010 10:55


Abstract

The free surface of liquid helium acts as an energy barrier on electron currents across the surface into the vapor, if the liquid is superfluid. In zero electric field, the barrier vanishes at Tλ. The measurements were performed in pure 4He in 4He.


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