Influence of incommensurate dynamic charge-density-wave scattering on the photoemission line shape of superconducting high-T{sub c} cuprates

Journal Article · Fri Jun 01 04:00:00 EDT 2001 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.63.224505· OSTI ID:40203469

Seibold, G; Grilli, M

We show that the spectral line shape of superconducting La{sub 2{minus}x}Sr{sub x}CuO{sub 4} (LSCO) and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) can be well described by the coupling of the charge carriers to collective incommensurate charge-density-wave (CDW) excitations. Our results imply that besides antiferromagnetic fluctuations also low-energy CDW modes can contribute to the observed dip-hump structure in the Bi2212 photoemission spectra. In case of underdoped LSCO we propose a possible interpretation of angle resolved photoemission spectroscopy data in terms of a grid pattern of fluctuating stripes where the charge and spin scattering directions deviate by {alpha}={pi}/4. Within this scenario we find that the spectral intensity along (0,0){r_arrow}({pi},{pi}) is strongly suppressed, consistent with recent photoemission experiments. In addition, the incommensurate charge-density-wave scattering leads to a significant broadening of the quasiparticle peak around ({pi},0).

• Sponsoring Organization: (US)
• OSTI ID: 40203469
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 22 Vol. 63; ISSN 0163-1829
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGE CARRIERS
CUPRATES
FLUCTUATIONS
PHOTOEMISSION
SCATTERING
SHAPE
SPECTRA
SPECTROSCOPY
SPIN