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Fermi-surface reconstruction by stripe order in cuprate superconductors

2011; Nature Portfolio; Volume: 2; Issue: 1 Linguagem: Inglês

10.1038/ncomms1440

2041-1723

F. Laliberté, J. Chang, N. Doiron-Leyraud, Elena Hassinger, Ramzy Daou, Maxime Rondeau, B. J. Ramshaw, Ruixing Liang, D. A. Bonn, W. N. Hardy, Sunseng Pyon, T. Takayama, H. Takagi, I. Sheikin, Liam Malone, Cyril Proust, Kamran Behnia, Louis Taillefer,

Magnetic and transport properties of perovskites and related materials

The origin of pairing in a superconductor resides in the underlying normal state. In the cuprate high-temperature superconductor YBa2Cu3Oy (YBCO), application of a magnetic field to suppress superconductivity reveals a ground state that appears to break the translational symmetry of the lattice, pointing to some density-wave order. Here we use a comparative study of thermoelectric transport in the cuprates YBCO and La1.8−xEu0.2SrxCuO4 (Eu-LSCO) to show that the two materials exhibit the same process of Fermi-surface reconstruction as a function of temperature and doping. The fact that in Eu-LSCO this reconstruction coexists with spin and charge modulations that break translational symmetry shows that stripe order is the generic non-superconducting ground state of hole-doped cuprates. An electron pocket exists in the Fermi-surface of the high temperature superconductor YBa2Cu3Oy, but its origin is unknown. Here, YBa2Cu3Oy and La1.8−xEu0.2SrxCuO4 are both shown to exhibit Fermi-surface reconstruction, and in the latter, this is due to stripe order, suggesting that the same mechanism exists in YBa2Cu3Oy.