Journal of Superconductivity

, Volume 10, Issue 4, pp 383–387

Tc amplication and pseudogap at a shape resonance in a superlattice of quantum stripes

Authors

  • A. Valletta
    • Università di Roma “Dipartimento di Fisica
  • G. Bardelloni
    • Università di Roma “Dipartimento di Fisica
  • M. Brunelli
    • Università di Roma “Dipartimento di Fisica
  • A. Lanzara
    • Università di Roma “Dipartimento di Fisica
  • A. Bianconi
    • Università di Roma “Dipartimento di Fisica
  • N. L. Saini
    • Dipartimento di FisicaIstituto Nazionale di Fisica Nucleare
Article

DOI: 10.1007/BF02765723

Cite this article as:
Valletta, A., Bardelloni, G., Brunelli, M. et al. J Supercond (1997) 10: 383. doi:10.1007/BF02765723

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 maximumTc. appears at a critical charge densityTc. Forp > pc (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< pc (in the overdoped regime).

Key Words

Quantum, stripes2D electron gaspseudogapsuperlattice

Copyright information

© Plenum Publishing Corporation 1997