Shubnikov-de Haas oscillations in YBa_2Cu_4O_8

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dc.creatorBangura, A. F.
dc.creatorFletcher, J. D.
dc.creatorCarrington, A.
dc.creatorLevallois, J.
dc.creatorNardone, M.
dc.creatorVignolle, B.
dc.creatorHeard, P. J.
dc.creatorDoiron-Leyraud, N.
dc.creatorLeBoeuf, D.
dc.creatorTaillefer, L.
dc.creatorAdachi, S.
dc.creatorProust, C.
dc.creatorHussey, N. E.
dc.date2007-07-30
dc.date2007-12-17
dc.date.accessioned2026-07-07T09:18:07Z
dc.date.available2026-07-07T09:18:07Z
dc.descriptionWe report the observation of Shubnikov-de Haas oscillations in the underdoped cuprate superconductor YBa$_2$Cu$_4$O$_8$ (Y124). For field aligned along the c-axis, the frequency of the oscillations is $660\pm 30$ T, which corresponds to $\sim 2.4$ % of the total area of the first Brillouin zone. The effective mass of the quasiparticles on this orbit is measured to be $2.7\pm0.3$ times the free electron mass. Both the frequency and mass are comparable to those recently observed for ortho-II YBa$_2$Cu$_3$O$_{6.5}$ (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.
dc.descriptionv2: Version of paper accepted for publication in Physical Review Letters. Only minor changes to the text and references
dc.identifierhttps://arxiv.org/abs/0707.4461
dc.identifierhttp://arxiv.org/abs/0707.4461
dc.identifierPRL 100, 047004 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.047004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/153911
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleShubnikov-de Haas oscillations in YBa_2Cu_4O_8
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