Perturbative theory of the non-equilibrium singlet-triplet transition

被引：0
|
作者：
Horvath, B. [1 ]
Lazarovits, B. [2 ,3 ]
Zarand, G. [1 ]
机构：
[1] Budapest Univ Technol & Econ, Inst Phys, Dept Theoret Phys, Budafoki Ut 8, H-1521 Budapest, Hungary
[2] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1121 Budapest, Hungary
[3] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA
来源：
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) | 2010年 / 200卷
关键词：
CARBON NANOTUBES; QUANTUM-DOT; KONDO; TRANSPORT; SYSTEMS;
D O I：
10.1088/1742-6596/200/1/012063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study equilibrium and non-equilibrium properties of a two-level quantum dot close to the singlet-triplet transition. We treat the on-site Coulomb interaction and Hund's rule coupling perturbatively within the Keldysh formalism. We compute the spectral functions and the differential conductance of the dot. For moderate interactions our perturbative approach captures the Kondo effect and many of the experimentally observed properties.
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页数：4
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