We discuss charge density wave transport as the periodic flow of a quantum fluid of electron–phonon correlates, viewed as quantum solitons, within the condensate. Pair creation of charged soliton droplets is prevented by their electrostatic energy below a Coulomb-blockade threshold electric field. Above threshold, the quantum fluid flows in drip-like fashion as microscopic entities tunnel coherently from one charging energy macrostate to the next. We summarize the time-correlated soliton tunneling model and compare simulations of coherent oscillations, narrow band noise, and current–voltage characteristics with experiment. We also explore the possibility of collective quantum behavior at room temperature in some materials. Finally, we discuss potential applications in quantum information processing.
Quantum fluidic charge density wave transport
Note: This paper is part of the APL Special Collection on Charge-Density-Wave Quantum Materials and Devices.
John H. Miller, M. Y. Suárez-Villagrán; Quantum fluidic charge density wave transport. Appl. Phys. Lett. 3 May 2021; 118 (18): 184002. https://doi.org/10.1063/5.0048834
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