Renormalization approach for quantum-dot structures under strong alternating fields
介观与纳米尺度物理
2009-11-07 v1
摘要
We develop a renormalization method for calculating the electronic structure of single and double quantum dots under intense ac fields. The nanostructures are emulated by lattice models with a clear continuum limit of the effective-mass and single-particle approximations. The coupling to the ac field is treated non-perturbatively by means of the Floquet Hamiltonian. The renormalization approach allows the study of dressed states of the nanoscopic system with realistic geometries as well arbitrary strong ac fields. We give examples of a single quantum dot, emphasizing the analysis of the effective-mass limit for lattice models, and double-dot structures, where we discuss the limit of the well used two-level approximation.
关键词
引用
@article{arxiv.cond-mat/0110434,
title = {Renormalization approach for quantum-dot structures under strong alternating fields},
author = {P. A. Schulz and P. H. Rivera and Nelson Studart},
journal= {arXiv preprint arXiv:cond-mat/0110434},
year = {2009}
}
备注
6 pages, 7 figures