Inelastic Scattering off a Nanomechanical Resonator

被引：0
|
作者：
Dora, Balazs [1 ]
Gulacsi, Miklos [1 ]
机构：
[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2009年 / 22卷 / 01期
基金：
匈牙利科学研究基金会;
关键词：
Dephasing; Inelastic scattering; Local phonon mode; MODEL;
D O I：
10.1007/s10948-008-0362-8
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study the dephasing rate of conduction electrons due to local vibrational modes. Bosonization allows us to evaluate the full T-matrix analytically. The inelastic scattering rate is strongly influenced by multiphonon excitations. 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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页码：25 / 27
页数：3
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