Phys. Rev. Lett. 42, 795–798 (1979)Evidence for a Liquid-to-Crystal Phase Transition in a Classical, Two-Dimensional Sheet of ElectronsReceived 17 January 1979; published in the issue dated 19 March 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/doi/10.1103/PhysRevLett.42.795
DOI:
10.1103/PhysRevLett.42.795
PACS:
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