Phys. Rev. Lett. 42, 795 - 798 (1979)Evidence for a Liquid-to-Crystal Phase Transition in a Classical, Two-Dimensional Sheet of Electrons |
C. C. Grimes and G. Adams
Bell Laboratories, Murray Hill, New Jersey 07974
Received 17 January 1979
Experimental evidence is presented for an electron-liquid to electron-crystal phase transition in a sheet of electrons on a liquid-He surface. The phase transition has been studied for electron areal densities from 3×108 cm-2 to 9×108 cm-2 and has yielded melting temperatures between 0.35 and 0.65 K. The phase transition occurs at Γ=137±15, where Γ is a measure of the ratio of potential energy to kinetic energy per electron.
©1979 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v42/p795
DOI: 10.1103/PhysRevLett.42.795
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