Pair Density Wave in the Pseudogap State of High Temperature Superconductors

Details Pair Density Wave in the Pseudogap State of High Temperature Superconductors Pair Density Wave in the Pseudogap State of High Temperature Superconductors

2004-02-11

arxiv.org/abs/cond-mat/0402323v4

Phys. Rev. Lett., 93, 187002 (2004)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures. Final version. PRL 93, 187002 (2004)

Scientific paper

10.1103/PhysRevLett.93.187002

Recent scanning tunneling microscopy (STM) experiments of Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ have shown evidence of real-space organization of electronic states at low energies in the pseudogap state. We argue based on symmetry considerations as well as model calculations that the experimentally observed modulations are due to a density wave of d-wave Cooper-pairs without global phase coherence. We show that STM measurements can distinguish a pair-density-wave from more typical electronic modulations such as those due to charge density wave ordering or scattering from an onsite periodic potential.

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