Localized persistent spin currents in defect-free quasiperiodic rings with Aharonov-Casher effect
Journal
Physics Letters, Section A: General, Atomic and Solid State Physics
Journal Volume
379
Journal Issue
18-19
Pages
1283-1287
Date Issued
2015
Author(s)
Abstract
We propose strongly localized persistent spin current in one-dimensional defect-free quasiperiodic Thue-Morse rings with Aharonov-Casher effect. The results show that the characteristics of these localized persistent currents depend not only on the radius filling factor, but also on the strength of the spin-orbit interaction. The maximum persistent spin currents in systems always appear in the ring near the middle position of the system array whether or not the Thue-Morse rings array is symmetrical. The magnitude of the persistent currents is proportional to the sharpness of the resonance peak, which is dependent on the bandwidth of the allowed band in the band structure. The maximum persistent spin currents also increase exponentially as the generation order of the system increases.
SDGs
Type
journal article