Spin-density wave fermi surface reconstruction in underdoped YBa2Cu3O6+x.
We consider the reconstruction expected for the Fermi surface of underdoped YBa(2)Cu(3)O(6+x) in the case of a collinear spin-density wave with a characteristic vector Q = (pi[1 +/- 2delta],pi), assuming an incommensurability delta approximately 0.06 similar to that found in recent neutron scattering experiments. A Fermi surface possibly consistent with the multiple observed quantum oscillation frequencies is obtained. From the low band masses expected using this model as compared with experiment, a uniform enhancement of the quasiparticle effective mass over the Fermi surface by a factor of approximately 7 is indicated. Further predictions of the Fermi surface topology are made, which may potentially be tested by experiment to indicate the relevance of this model to underdoped YBa(2)Cu(3)O(6+x).
Harrison
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National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS E536, Los Alamos, New Mexico 87545, USA.