Dynamical properties and Wigner transitions of two-dimensional electron lattices on dielectric substrates

Znanstveni rad - Izvorni znanstveni rad

• Autor: Z. Lenac
• Autor: Marijan Šunjić
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

The dynamical properties (phonon spectrum, sound velocities, vibrational energy) and phase transitions of a two-dimensional Wigner lattice are discussed in a model that takes into account the perpendicular delocalization of electron wave functions. The lattice floats above the dielectric substrate (He,Ar), with the dielectric constant determining the image force on the lattice. Those two effects, the perpendicular electron delocalization and the dielectric image force, which are obviously correlated, were usually neglected in the previous discussions of the Wigner-lattice dynamics. Here we show their influence on the electron-electron interaction and consequently on the dynamical properties of the Wigner lattice. We also suggest an experimental situation where those effects in the phase diagram could be eventually studied and detected.

• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review B (Condensed Matter)
• Brojčani podaci: vol. 44, br. 20, str. 11465-11471
• p-ISSN: 0163-1829
• DOI: https://doi.org/10.1103/PhysRevB.44.11465
• URN:NBN: urn:nbn:hr:217:495313
• Datum objave publikacije: 1991
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevB.44.11465
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (1991) by the American Physical Society.
• Datum i vrijeme pohrane: 2019-10-01 20:18:10