Physics – Condensed Matter – Superconductivity
Scientific paper
2007-07-30
PRL 100, 047004 (2008)
Physics
Condensed Matter
Superconductivity
v2: Version of paper accepted for publication in Physical Review Letters. Only minor changes to the text and references
Scientific paper
10.1103/PhysRevLett.100.047004
We 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.
Adachi Satoshi
Bangura Alimamy F.
Carrington Alan
Doiron-Leyraud Nicolas
Fletcher J. D.
No associations
LandOfFree
Shubnikov-de Haas oscillations in YBa_2Cu_4O_8 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shubnikov-de Haas oscillations in YBa_2Cu_4O_8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shubnikov-de Haas oscillations in YBa_2Cu_4O_8 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-360176