Journal
PHYSICS LETTERS A
Volume 380, Issue 29-30, Pages 2317-2321Publisher
ELSEVIER
DOI: 10.1016/j.physleta.2016.05.014
Keywords
Quantum pumping; Disorder; Topological property in one dimension
Categories
Funding
- NSFC [11274032, 11104189]
- Fok Ying Tong Education Foundation
- Program for NCET
- Fundamental Research Funds for the Central Universities [FRF-BR-15-009B]
- Beijing Higher Education Young Elite Teacher Project [0389]
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The topological property in one dimension is protected by symmetry. Based on a concrete model, we study the effect of disorder preserving or breaking the symmetry and show the nature of symmetry protecting in the one dimensional topological phase. A stable quantum pumping can be constructed within the topological model. It is shown that an integer charge is pumped across a periodic chain in a cyclic process. Furthermore we find that not only the quantum pumping is stable to on-site disorder, but also can be induced by it. These results may be realized experimentally using quasicrystals. (C) 2016 Elsevier B.V. All rights reserved.
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