Physics – Condensed Matter – Superconductivity
Scientific paper
2004-02-11
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.
Chen Han-Dong
Vafek Oskar
Yazdani Ali
Zhang Shou-Cheng
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