1307.2103 (Paramita Dutta et al.)

A renormalization group study of persistent current in a quasiperiodic
ring    [PDF]

Paramita Dutta, Santanu K. Maiti, S. N. Karmakar

We propose a real-space renormalization group approach for evaluating persistent current in a multi-channel quasiperiodic fibonacci tight-binding ring based on a Green's function formalism. Unlike the traditional methods, the present scheme provides a powerful tool for the theoretical description of persistent current with a very high degree of accuracy in large periodic and quasiperiodic rings, even in the micron scale range, which emphasizes the merit of this work.

View original: http://arxiv.org/abs/1307.2103