Quantum oscillations in the underdoped cuprate YBa2Cu4O8

Edward Alexander Yelland, J. Singleton, C. H. Mielke, N. Harrison, F. F. Balakirev, B. Dabrowski, J. R. Cooper

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227 Citations (Scopus)

Abstract

We report the observation of quantum oscillations in the underdoped cuprate superconductor YBa2Cu4O8 using a tunnel-diode oscillator technique in pulsed magnetic fields up to 85 T. There is a clear signal, periodic in inverse field, with frequency 660 +/- 15 T and possible evidence for the presence of two components of slightly different frequency. The quasiparticle mass is m*=3.0 +/- 0.3m(e). In conjunction with the results of Doiron-Leyraud et al. for YBa2Cu3O6.5, the present measurements suggest that Fermi surface pockets are a general feature of underdoped copper oxide planes and provide information about the doping dependence of the Fermi surface.

Original languageEnglish
Article number047003
Number of pages4
JournalPhysical Review Letters
Volume100
Issue number4
DOIs
Publication statusPublished - 1 Feb 2008

Keywords

  • FERMI-SURFACE
  • SUPERCONDUCTOR
  • PSEUDOGAP
  • PHASE
  • YBA2CU3O7-DELTA
  • LIQUID

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