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Electride surface hosts Wigner-crystal melting

Two-dimensional electrons on the surface of an electride are found to exhibit a phase transition from a normal Fermi liquid to an interesting quantum liquid, which is probably a quantum version of an electronic crystal beyond the melting point.

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Fig. 1: Phase diagram of an ideal 2D electron system.


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Correspondence to Atsushi Fujimori.

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Fujimori, A. Electride surface hosts Wigner-crystal melting. Nat. Mater. 21, 1217–1218 (2022).

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