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

C. -T. Chen·N. -C. Yeh
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Abstract

The energy, momentum and temperature dependence of the quasiparticle local density of states (LDOS) of a two-dimensional $d_{x^2-y^2}$-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 $\rm Bi_2Sr_2CaCu_2O_x$.

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C. -T. Chen, N. -C. Yeh. 2003-11-25. Collective modes and quasiparticle interference on the local density of states of cuprate superconductors. https://doi.org/10.1103/physrevb.68.220505

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