Adiabatic pumping via avoided crossings in stiffness-modulated quasiperiodic beams

Article

关键词: LOCALIZATION;    PROPAGATION;    EIGENVALUES;    WAVES;   

DOI  :  10.1103/PhysRevB.102.014305

来源: SCIE

【 摘 要 】

In this paper we report on adiabatic pumping in quasiperiodic stiffness-modulated beams. We show that distinct topological states populating nontrivial gaps can nucleate avoided crossings characterized by edge-to-edge transitions. Such states are inherently coupled when a smooth variation of the modulation phase is induced along a synthetic dimension, resulting in topological edge-to-edge transport stemming from distinct polarizations of the crossing states. We first present a general framework to estimate the required modulation speed for a given transition probability in time. Then this analysis tool is exploited to tailor topological pumping in a stiffness-modulated beam.

【 授权许可】

Free