Catalogue of phonon modes in several cuprate high-temperature superconductors from density functional theory

2020/10/20 by Noah J. Jabusch, Jabusch, N. J., Pavan Dayal +3
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con)

paper · pdf · doi:10.48550/arxiv.2010.10553

openalex publication_date 2020/10/20 · openalex created_date 2020/10/29 · openalex updated_date 2026/07/28

Abstract

Cuprates are promising candidates for study in developing higher temperature superconductors. A thorough understanding of a material's phonon modes enables further investigation of its emergent properties, however, no complete reference of the phonon modes exists. Here, using density functional theory, we evaluate the phonon frequencies and atomic displacements for La₂CuO₄, Bi₂Sr₂CuO₆, and Bi₂Sr₂CaCu₂O₈ in their tetragonal structures. The phonon modes for all materials agree with those expected from space group symmetry and display instabilities corresponding to known low-temperature structural phase transitions.

Related

• Resolving Phonons in Superconductor Bi2Sr2CaCu2O8+δ at Sub-Unit-Cell Resolution
• Probing electronic order via coupling to low energy phonons in superconducting Bi₂Sr_2-xLa_xCuO_6+δ
• Strength of the phonon-coupling mode in La_2-xSr_xCuO₄, Bi₂Sr₂CaCu₂O_8+x and YBa₂Cu₃O_6+x: An estimation from the ARPES-nodal measurements
• Origin and roles of a strong electron-phonon interaction in cuprate oxide superconductors
• Density response of cuprates and renormalization of breathing phonons