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Bangura AF, Fletcher JD, Carrington A, et al. Small Fermi surface pockets in underdoped high temperature superconductors: observation of Shubnikov-de Haas oscillations in YBa2Cu4O8. Phys Rev Lett. 2008;100(4):047004doi: 10.1103/PhysRevLett.100.047004.
Bangura, A. F., Fletcher, J. D., Carrington, A., Levallois, J., Nardone, M., Vignolle, B., Heard, P. J., Doiron-Leyraud, N., Leboeuf, D., Taillefer, L., Adachi, S., Proust, C., & Hussey, N. E. (2008). Small Fermi surface pockets in underdoped high temperature superconductors: observation of Shubnikov-de Haas oscillations in YBa2Cu4O8. Physical review letters, 100(4), 047004. https://doi.org/10.1103/PhysRevLett.100.047004
Bangura, A F, et al. "Small Fermi surface pockets in underdoped high temperature superconductors: observation of Shubnikov-de Haas oscillations in YBa2Cu4O8." Physical review letters vol. 100,4 (2008): 047004. doi: https://doi.org/10.1103/PhysRevLett.100.047004
Bangura AF, Fletcher JD, Carrington A, Levallois J, Nardone M, Vignolle B, Heard PJ, Doiron-Leyraud N, Leboeuf D, Taillefer L, Adachi S, Proust C, Hussey NE. Small Fermi surface pockets in underdoped high temperature superconductors: observation of Shubnikov-de Haas oscillations in YBa2Cu4O8. Phys Rev Lett. 2008 Feb 01;100(4):047004. doi: 10.1103/PhysRevLett.100.047004. Epub 2008 Feb 01. PMID: 18352322.
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Phys Rev Lett. 2008 Feb 01;100(4):047004. doi: 10.1103/PhysRevLett.100.047004. Epub 2008 Feb 01.

Small Fermi surface pockets in underdoped high temperature superconductors: observation of Shubnikov-de Haas oscillations in YBa2Cu4O8.

Physical review letters

A F Bangura, J D Fletcher, A Carrington, J Levallois, M Nardone, B Vignolle, P J Heard, N Doiron-Leyraud, D Leboeuf, L Taillefer, S Adachi, C Proust, N E Hussey

Affiliations

  1. H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, United Kingdom.

PMID: 18352322 DOI: 10.1103/PhysRevLett.100.047004

Abstract

We report the observation of Shubnikov-de Haas oscillations in the underdoped cuprate superconductor YBa2Cu4O8 (Y124). For fields aligned along the c axis, the frequency of the oscillations is 660+/-30 T, which corresponds to approximately 2.4% of the total area of the first Brillouin zone. The effective mass of the quasiparticles on this orbit is measured to be 2.7+/-0.3 times the free electron mass. Both the frequency and mass are comparable to those recently observed for ortho-II YBa2Cu3O6.5 (Y123-II). We show that although small Fermi surface pockets may be expected from band-structure calculations in Y123-II, no such pockets are predicted for Y124. Our results therefore imply that these small pockets are a generic feature of the copper oxide plane in underdoped cuprates.

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