Abstract
Beginning with a microscopically obtained density profile near the free surface of liquid helium an analysis of the electronic surface states, both inside and outside, is carried out. For the potential barrier seen by electron bubbles trapped inside the surface layer we find an upper bound of 38 K, in comparison with experimental values ranging from 25 to 30 K. For outside states we find a binding energy of 9 K and a hydrogenlike spectrum. There are no adjustable parameters in the theory.
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Work supported in part by the National Science Foundation through grant No. GH-39127, and through the Materials Research Center of Northwestern University, and in part by the National Science Council, Taiwan, China.
On leave from Tamkang College of Arts and Sciences, Tamsui, Taiwan, China.
Alfred P. Sloan Research Fellow.
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Huang, HM., Shih, Y.M. & Woo, CW. Electronic surface states on liquid helium. J Low Temp Phys 14, 413–418 (1974). https://doi.org/10.1007/BF00658870
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DOI: https://doi.org/10.1007/BF00658870