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Collective modes and quasiparticle interference on the local density of states of cuprate superconductors

C.-T. Chen, N.-C. Yeh

DOI 10.1103/PhysRevB.68.220505 · Physical Review B

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Abstract

The energy, momentum, and temperature dependence of the quasiparticle local density of states (LDOS) of a two-dimensional dx2−y2-wave superconductor with random disorder is investigated using the first-order T-matrix approximation. The results suggest that collective modes such as spin-charge-density waves are relevant low-energy excitations of the cuprates that contribute to the observed LDOS modulations in recent scanning tunneling microscopy studies of Bi2Sr2CaCu2Ox.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
Bi2Sr2CaCu2Ox

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80Pressure not reportedunknown
Bi2Sr2CaCu2O8

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown
Bi2(Sr2-xLax)Cu2O6

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown
YBa2Cu3O7

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown