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Interpreting quantum oscillation experiments on underdoped YBa2Cu3O6+x

Source: Phys. Rev. B 81, 060506 (2010); doi:10.1103/PhysRevB.81.060506

Published 19 February 2010

PACS
  • 74.25.F-
    Transport properties
  • 74.25.Gz
    Optical properties of superconductors
  • 74.72.-h
    Cuprate superconductors
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
J. M. Tranquada,1 D. N. Basov,2 A. D. LaForge,2 and A. A. Schafgans2
1Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
2Department of Physics, University of California–San Diego, La Jolla, California 92093, USA
On the basis of negative transport coefficients, it has been argued that the quantum oscillations observed in underdoped YBa2Cu3O6+x in high magnetic fields must be due to antinodal electron pockets. We point out a counterexample in which electronlike transport in a hole-doped cuprate is associated with Fermi-arc states. We also present evidence that the antinodal gap in YBa2Cu3O6.67 is robust to modest applied magnetic fields. We suggest that these observations should be taken into account when interpreting the results of the quantum oscillation experiments. ©2010 The American Physical Society
History: Received 10 August 2009; revised 30 November 2009; published 19 February 2010
Permalink: http://link.aps.org/abstract/PRB/v81/e060506
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