Abstract
The shape resonance of the superconducting gap for a 2D electron gas in a superlattice of quantum stripes with a finite 1 D periodic potential barrier is studied when the Fermi level is tuned near the bottom of the third superlattice subband. The maximumT c . appears at a critical charge densityT c . Forp > p c (in the underdoped regime) the chemical potential is tuned in a pseudogap region characterized by a decrease of the density of states and an opening of the partial gap at the Fermi surface. The pseudogap is closed forp< p c (in the overdoped regime).
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Valletta, A., Bardelloni, G., Brunelli, M. et al. T c amplication and pseudogap at a shape resonance in a superlattice of quantum stripes. J Supercond 10, 383–387 (1997). https://doi.org/10.1007/BF02765723
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DOI: https://doi.org/10.1007/BF02765723