Interaction of spin and vibrations in transport through single-molecule magnets

被引：17
|
作者：
May, Falk [2 ,3 ]
Wegewijs, Maarten R. [1 ,4 ,5 ]
Hofstetter, Walter [2 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Theorie Stat Phys, D-52056 Aachen, Germany
[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany
[3] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[4] Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany
[5] Forschungszentrum Julich, JARA Fundamentals Informat Technol, D-52425 Julich, Germany
来源：
BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2011年 / 2卷
关键词：
molecular electronic devices; molecular magnets; nanoelectronic devices; quantum dots; MN-12-ACETATE; RELAXATION; ANISOTROPY; FIELD;
D O I：
10.3762/bjnano.2.75
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We study electron transport through a single-molecule magnet (SMM) and the interplay of its anisotropic spin with quantized vibrational distortions of the molecule. Based on numerical renormalization group calculations we show that, despite the longitudinal anisotropy barrier and small transverse anisotropy, vibrational fluctuations can induce quantum spin-tunneling (QST) and a QST-Kondo effect. The interplay of spin scattering, QST and molecular vibrations can strongly enhance the Kondo effect and induce an anomalous magnetic field dependence of vibrational Kondo side-bands.
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页码：693 / 698
页数：6
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