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Title: Spatial dispersion in atom-surface quantum friction

We investigate the influence of spatial dispersion on atom-surface quantum friction. We show that for atom-surface separations shorter than the carrier's mean free path within the material, the frictional force can be several orders of magnitude larger than that predicted by local optics. In addition, when taking into account spatial dispersion effects, we show that the commonly used local thermal equilibrium approximation underestimates by approximately 95% the drag force, obtained by employing the recently reported nonequilibrium fluctuation-dissipation relation for quantum friction. Unlike the treatment based on local optics, spatial dispersion in conjunction with corrections to local thermal equilibrium change not only the magnitude but also the distance scaling of quantum friction.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  1. Humboldt-Univ. zu Berlin, Berlin (Germany); Max-Born-Institut, Berlin (Germany)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Max-Born-Institut, Berlin (Germany)
Publication Date:
Report Number(s):
LA-UR-17-20271
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702674
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 15; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Atomic and Nuclear Physics
OSTI Identifier:
1374326
Alternate Identifier(s):
OSTI ID: 1353503