Inelastic Scattering from Local Vibrational Modes

Details Inelastic Scattering from Local Vibrational Modes Inelastic Scattering from Local Vibrational Modes

Publishing date

2008-06-10

URL

arxiv.org/abs/0806.1680v1

Journals

Phys. Rev. B 78, 165111 (2008)

Science

Physics

Field

Condensed Matter

SubField

Strongly Correlated Electrons

Additional info

5 pages, 3 figures

Type

Scientific paper

Digital Object Identifier

10.1103/PhysRevB.78.165111

Abstract

We study a nonuniversal contribution to the dephasing rate of conduction electrons due to local vibrational modes. The inelastic scattering rate is strongly influenced by multiphonon excitations, exhibiting oscillatory behaviour. For higher frequencies, it saturates to a finite, coupling dependent value. In the strong coupling limit, the phonon is almost completely softened, and the inelastic cross section reaches its maximal value. This represents a magnetic field insensitive contribution to the dephasing time in mesoscopic systems, in addition to magnetic impurities.

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