2013/09/04 by Lucas H. Ingaramo, Luis E. F. Foa Torres · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Adiabatic process #Advancements in Semiconductor Devices and Circuit Design #Charge (physics) #Coherence (philosophical gambling strategy) #Condensed matter physics #Graphene #Graphene nanoribbons #Graphene research and applications #Lattice (music) #Materials science #Physics #Quantum #Quantum and electron transport phenomena #Quantum computer #Quantum mechanics #Quantum metrology #Quantum simulator #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.4821262
published as Applied Physics Letters 103, 123508 (2013)
arxiv created 2013/09/04 · openalex publication_date 2013/09/16 · arxiv updated 2013/09/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Quantum charge pumping, the quantum coherent generation of a dc current at zero bias through time-dependent potentials, provides outstanding opportunities for metrology and the development of nanodevices. The long electronic coherence times and high quality of the crystal structure of graphene may provide suitable building blocks for such quantum pumps. Here, we focus in adiabatic quantum pumping through graphene nanoribbons in the Fabry-Pérot regime highlighting the crucial role of defects by using atomistic simulations. We show that even a single defect added to the pristine structure may produce a two orders of magnitude increase in the pumped charge.