Yang-Rice-Zhang description of checkerboard pattern and autocorrelation of photoemission data in high-temperature superconductors

E. Bascones; B. Valenzuela

doi:10.1103/PhysRevB.77.024527

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Yang-Rice-Zhang description of checkerboard pattern and autocorrelation of photoemission data in high-temperature superconductors

E. Bascones, B. Valenzuela

DOI 10.1103/PhysRevB.77.024527 · Physical Review B

T1

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Abstract

In the pseudogap state, the spectrum of the autocorrelation of angle resolved photoemission spectroscopy (AC-ARPES) data of Bi2Sr2CaCu2O8+δ presents nondispersive peaks in momentum space, while dispersive peaks are found in the superconducting state. Both dispersive and nondispersive features compare well with those found in Fourier transform scanning tunneling spectroscopy (FT-STS). Here, we show that the experimental AC-ARPES spectrum can be reproduced using the Yang-Rice-Zhang model for the pseudogap with no intrinsic charge ordering or symmetry breaking. This result suggests that quantum interference of quasiparticles can also play a role in the nondispersive features of FT-STS associated with the so-called checkerboard pattern in the pseudogap state. Due to the competition of superconductivity and pseudogap included in this model, we obtain both dispersive and nondispersive peaks in the AC-ARPES data of superconducting underdoped cuprates.

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