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Magnetic Quantum Oscillations in YBa2Cu3O6.61 and YBa2Cu3O6.69 in Fields of Up to 85 T: Patching the Hole in the Roof of the Superconducting Dome
Phys. Rev. Lett. (2010)
  • John Singleton
  • Clarina de la Cruz
  • R. D. McDonald
  • Shiliang Li
  • Moaz Altarawneh
  • Paul Goddard
  • Isabel Franke
  • Dwight Rickel
  • C. H. Mielke
  • Xin Yao
  • Pengcheng Dai, University of Tennessee, Knoxville
Abstract

We measure magnetic quantum oscillations in the underdoped cuprates YBa2Cu3O6+x with x=0.61, 0.69, using fields of up to 85 T. The quantum-oscillation frequencies and effective masses obtained suggest that the Fermi energy in the cuprates has a maximum at hole doping p≈0.11–0.12. On either side, the effective mass may diverge, possibly due to phase transitions associated with the T=0 limit of the metal-insulator crossover (low-p side), and the postulated topological transition from small to large Fermi surface close to optimal doping (high p side).

DOI: 10.1103/PhysRevLett.104.086403

Disciplines
Publication Date
February, 2010
Citation Information
John Singleton, Clarina de la Cruz, R. D. McDonald, Shiliang Li, et al.. "Magnetic Quantum Oscillations in YBa2Cu3O6.61 and YBa2Cu3O6.69 in Fields of Up to 85 T: Patching the Hole in the Roof of the Superconducting Dome" Phys. Rev. Lett. Vol. 104 Iss. 8 (2010)
Available at: http://works.bepress.com/pengcheng_dai/4/