Spin-density wave Fermi surface reconstruction in underdoped YBa2Cu3O6+x

Details Spin-density wave Fermi surface reconstruction in underdoped YBa2Cu3O6+x Spin-density wave Fermi surface reconstruction in underdoped YBa2Cu3O6+x

2009-02-16

arxiv.org/abs/0902.2741v1

Physics

Condensed Matter

Strongly Correlated Electrons

4

Scientific paper

We consider the reconstruction expected for the Fermi surface of underdoped YBa2Cu3O6+x in the case of a collinear spin-density wave with a characteristic vector Q=(pi[1+/-2 delta],pi), assuming an incommensurability delta~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 ~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 YBa2Cu3O6+x.

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