Quantum oscillations in the underdoped cuprate YBa2Cu4O8

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

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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
Pages (from-to)-
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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