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Persistent low-energy phonon broadening near the charge-order q vector in the bilayer cuprate Bi2Sr2CaCu2O8+δ
- Source :
- Physical Review B, vol 98, iss 3, He, Y; Wu, S; Song, Y; Lee, WS; Said, AH; Alatas, A; et al.(2018). Persistent low-energy phonon broadening near the charge-order q vector in the bilayer cuprate Bi2Sr2CaCu2 O8+δ. Physical Review B, 98(3), 035102. doi: 10.1103/PhysRevB.98.035102. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/44d821qp
- Publication Year :
- 2018
- Publisher :
- eScholarship, University of California, 2018.
-
Abstract
- © 2018 American Physical Society. We report a persistent low-energy phonon broadening around qB∼0.28 reciprocal lattice unit (r.l.u.) along the Cu-O bond direction in the high-Tc cuprate Bi2Sr2CaCu2O8+δ (Bi-2212). We show that such broadening exists both inside and outside the conventional charge-density wave (CDW) phase, via temperature-dependent measurements in both underdoped and heavily overdoped samples. Combining inelastic hard x-ray scattering, diffuse scattering, angle-resolved photoemission spectroscopy, and resonant soft x-ray scattering at the Cu L3-edge, we exclude the presence of a CDW in the heavily overdoped Bi-2212 similar to that observed in the underdoped systems. Finally, we discuss the origin of such anisotropic low-energy phonon broadening and its potential precursory role to the CDW phase in the underdoped region.
Details
- Database :
- OpenAIRE
- Journal :
- Physical Review B, vol 98, iss 3, He, Y; Wu, S; Song, Y; Lee, WS; Said, AH; Alatas, A; et al.(2018). Persistent low-energy phonon broadening near the charge-order q vector in the bilayer cuprate Bi2Sr2CaCu2 O8+δ. Physical Review B, 98(3), 035102. doi: 10.1103/PhysRevB.98.035102. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/44d821qp
- Accession number :
- edsair.dedup.wf.001..711c1d14e07fc84f6a0feba0e54e2ed4