Chemical Trend of Superconducting Transition Temperature in Hole-doped Delafossite of CuAlO_2, AgAlO_2 and AuAlO_2

Abstract

We have performed the first-principles calculations about the superconducting transition temperature T_c of hole-doped delafossite CuAlO_2, AgAlO_2 and AuAlO_2. Calculated T_c are about 50 K(CuAlO_2), 40 K(AgAlO_2) and 3 K(AuAlO_2) at maximum in the optimum hole-doping concentration. The low T_c of AuAlO_2 is attributed to the weak electron-phonon interaction caused by the low covalency and heavy atomic mass.

arXiv comment9 pages, 6 figures, 1 tables, SSC in printing

References in corpus (3)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Phonons and related properties of extended systems from density-functional perturbation theory
• Computational Materials Design for High Critical Temperature Superconductivity in Hole-Doped Delafossite CuAlO${}_2$: Transparent Superconductors

Cited by in corpus (2)

• Chemical Trend of Superconducting Transition Temperature in Hole-doped CuBO${}_2$, CuAlO${}_2$, CuGaO${}_2$ and CuInO${}_2$
• Doping-Induced Spectral Shifts in Two Dimensional Metal Oxides