Asymmetric Franck-Condon factors in suspended carbon nanotube quantum dots

被引：40

作者：

Cavaliere, Fabio ^{[1
,2
]}

Mariani, Eros ^{[3
,4
]}

Leturcq, Renaud ^{[5
,6
]}

Stampfer, Christoph ^{[5
,7
,8
]}

Sassetti, Maura ^{[1
,2
]}

机构：

[1] Univ Genoa, CNR SPIN, I-16146 Genoa, Italy

[2] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[3] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany

[4] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

[5] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[6] ISEN, CNRS, IEMN, UMR 8520, F-59652 Villeneuve Dascq, France

[7] Rhein Westfal TH Aachen, JARA FIT, D-52074 Aachen, Germany

[8] Rhein Westfal TH Aachen, Inst Phys 2, D-52074 Aachen, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 20期

关键词：

BLOCKADE; PHONONS; MODEL; BAND;

D O I：

10.1103/PhysRevB.81.201303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electronic states and vibrons in carbon nanotube quantum dots have, in general, different location and size. As a consequence, the conventional Anderson-Holstein model, coupling vibrons to the dot total charge only, may no longer be appropriated in general. Here we explicitly address the role of the spatial fluctuations of the electronic density, yielding space-dependent Franck-Condon factors. We discuss the consequent marked effects on transport which are compatible with recent measurements. This picture can be relevant for tunneling experiments in generic nanoelectromechanical systems.

引用

页数：4

共 31 条

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