Translational symmetry breaking in the superconducting state of the cuprates: Analysis of the quasiparticle density of states
Daniel Podolsky, Eugene Demler, Kedar Damle, B. I. Halperin
DOI 10.1103/PhysRevB.67.094514 · Physical Review B
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Abstract
Motivated by recent scanning tuneling microscopy (STM) experiments on Bi2Sr2CaCu2O8+δ [J. E. Hoffman et al., Science 295, 466 (2002); C. Howald et al., cond-mat/0201546 (unpublished); J. E. Hoffman et al., Science 297, 1149 (2002): K. McElroy et al. (unpublished); C. Howald et al., cond-mat/0208442 (unpublished)], we study the effects of weak translational symmetry breaking on the quasiparticle spectrum of a d-wave superconductor. We develop a general formalism to discuss periodic charge order, as well as quasiparticle scattering off localized defects. We argue that the STM experiments in Bi2Sr2CaCu2O8+δ cannot be explained using a simple charge density wave order parameter, but are consistent with the presence of a periodic modulation in the electron hopping or pairing amplitude. We review the effects of randomness and pinning of the charge order and compare it to the impurity scattering of quasiparticles. We also discuss implications of weak translational symmetry breaking for angle resolved photoemission spectroscopy experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.6-xNd0.4SrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| LaxSr1-xCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2CuO4+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6.35 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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