Nonlocal microscopic theory of quantum friction between parallel metallic slabs

Znanstveni rad - Izvorni znanstveni rad

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

Sažetak (engleski)

We present a new derivation of the friction force between two metallic slabs moving with constant relative parallel velocity, based on T=0 quantum-field theory formalism. By including a fully nonlocal description of dynamically screened electron fluctuations in the slab, and avoiding the usual matching-condition procedure, we generalize previous expressions for the friction force, to which our results reduce in the local limit. Analyzing the friction force calculated in the two local models and in the nonlocal theory, we show that for physically relevant velocities local theories using the plasmon and Drude models of dielectric response are inappropriate to describe friction, which is due to excitation of low-energy electron-hole pairs, which are properly included in nonlocal theory. We also show that inclusion of dissipation in the nonlocal electronic response has negligible influence on friction.

• Ključne riječi (engleski): quantum friction; nonlocal response; Drude and plasmon models
• 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 and materials physics
• Brojčani podaci: vol. 83, br. 20, 205424
• p-ISSN: 1098-0121
• e-ISSN: 1550-235X
• DOI: https://doi.org/10.1103/PhysRevB.83.205424
• URN:NBN: urn:nbn:hr:217:348991
• Datum objave publikacije: 2011
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevB.83.205424
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2011) by the American Physical Society. Received 13 December 2010; revised manuscript received 8 April 2011; published 23 May 2011.
• Datum i vrijeme pohrane: 2019-11-15 14:31:17