Non-cubic layered structure of Ba(1-x)K(x)BiO3 superconductor

Abstract

Bismuthate superconductor Ba(1-x)K(x)BiO3 (x=0.27-0.49, Tc=25-32K) grown by an electrolysis technique was studied by electron diffraction and high-resolution electron microscopy. The crystalline structure thereof has been found to be non-cubic, of the layered nature, and non-centrosymmetric, with the lattice parameters a ~ ap, c ~ 2ap (ap is a simple cubic perovskite cell parameter) containing an ordered arrangement of barium and potassium. The evidence for the layered nature of the bismuthate superconductor removes the principal crystallographic contradiction between bismuthate and cuprate high-Tc superconductors.

4 pages, 3 figures, to be published in Physical Review B as a Rapid Communication

Cited by in corpus (8)

• Electronic Collective Modes and Superconductivity in Layered Conductors
• Polaronic hole-trapping in doped $\mathrm{BaBi}{\mathrm{O}}_3$
• Surface Structure Analysis of Atomically Smooth BaBiO${}_3$ Films
• CDW and similarity of the Mott-Insulator-to-Metal transition in cuprates with the gas to liquid-liquid transition in supercooled water
• Structural Behavior of Non-Oxide Perovskite Superconductor MgCNi${}_3$ at Pressures up to 32 GPa
• Microwave Properties of Ba(0.6)K(0.4)BiO(3) Crystals
• Superconducting materials - a topical overview
• Observation of a Transition from BCS to HTSC-like Superconductivity in Ba_{1-x}K_xBiO_3 Single Crystals