Dresden 2014 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 34: Poster Session

MM 34.31: Poster

Dienstag, 1. April 2014, 18:00–20:00, P4

effect of gap-size on phonon tunneling in Au(111)/vacuum/Au(111) — •Saeideh Edalati Boostan, Michael Czerner, Michael Bachmann, and Christian Heiliger — I. Physikalisches Institut, Justus Liebig University Giessen, D-35392, Germany

Recent experimental and theoretical investigations have shown that phonons can transport across vacuum gaps of a few angstroms wide which called "phonon tunneling"[1,2,3]. In this work we perform ab initio calculations by using abinit software package to get interactions between atoms, which are modeled by spring constants. These interatomic force constants are used within an Atomistic Green's Function (AGF) method to calculate phonon tunneling in Au(111)/Vacuum/Au(111) system for different gap-sizes.

[1] Igor Altfeder et al., Phys. Rev. Lett. 105, 166101 (2010)

[2] Mika Prunnila and Johanna Meltaus, Phys. Rev. Lett. 105,

125501 (2010)

[3] D. P. Sellan et al., Phys. Rev. B 85, 024118 (2012)