Impact of nuclear vibrations on van der Waals and Casimir interactions at zero and finite temperature
arXiv:1810.03415 · doi:10.1126/sciadv.aaw0456
Abstract
Van der Waals (vdW) and Casimir interactions depend crucially on material properties and geometry, especially at molecular scales, and temperature can produce noticeable relative shifts in interaction characteristics. Despite this, common treatments of these interactions ignore electromagnetic retardation, atomism, or contributions of collective mechanical vibrations (phonons) to the infrared response, which can interplay with temperature in nontrivial ways. We present a theoretical framework for computing electromagnetic interactions among molecular structures, accounting for their geometry, electronic delocalization, short-range interatomic correlations, dissipation, and phonons at atomic scales, along with long-range electromagnetic interactions among themselves or in the vicinity of continuous macroscopic bodies. We find that in carbon allotropes, particularly fullerenes, carbyne wires, and graphene sheets, phonons can couple strongly with long-range electromagnetic fields, especially at mesoscopic scales (nanometers), to create delocalized phonon polaritons that significantly modify the infrared molecular response. These polaritons especially depend on the molecular dimensionality and dissipation, and in turn affect the vdW interaction free energies of these bodies above a macroscopic gold surface, producing nonmonotonic power laws and nontrivial temperature variations at nanometer separations that are within the reach of current Casimir force experiments.
arXiv comment11 pages, 4 figures (3 single-column, 1 double-column), 2 appendices
References in corpus (30)
- The electronic properties of graphene
- Thermal Properties of Graphene, Carbon Nanotubes and Nanostructured Carbon Materials
- High-accuracy first-principles determination of the structural, vibrational and thermodynamical properties of diamond, graphite, and derivatives
- Heat transport in silicon from first principles calculations
- Confined linear carbon chains: A route to bulk carbyne
- Carbyne from first principles: Chain of C atoms, a nanorod or a nanorope?
- A Materials Perspective on Casimir and van der Waals Interactions
- Tuning quantum non-local effects in graphene plasmonics
- Phonon Transport in Graphene
- Observation of the thermal Casimir force
- Casimir interaction between a plate and a cylinder
- Phonon dispersions and vibrational properties of monolayer, bilayer, and trilayer graphene
- Near-field thermal radiation transfer controlled by plasmons in graphene
- Casimir Forces and Graphene Sheets
- Casimir forces on a silicon micromechanical chip
- Measurement of non-monotonic Casimir forces between silicon nanostructures
- Measuring the Casimir force gradient from graphene on a SiO_2 substrate
- Flexural mode of graphene on a substrate
- Retarded interactions in Graphene systems
- Finite-temperature Screening and the Specific Heat of Doped Graphene Sheets
- Evaluation of van der Waals density functionals for layered materials
- Casimir Effects: an Optical Approach II. Local Observables and Thermal Corrections
- Phonon dispersion in graphene
- Casimir force between sharp-shaped conductors
- Screening of electron-phonon coupling in graphene on Ir(111)
- Unifying microscopic and continuum treatments of van der Waals and Casimir interactions
- Comparison of hydrodynamic model of graphene with recent experiment on measuring the Casimir interaction
- Casimir-Polder interaction of fullerene molecules with surfaces
- Optical signatures of nonlocal plasmons in graphene
- Nonequilibrium Excitations and Transport of Dirac Electrons in Electric-Field-Driven Graphene