Stabilization of high-pressure GeCu$_{2}$O$_{4}$ spinel cuprate with quasi-1D $S=1/2$ chains in the epitaxial thin-film form

Denis M. Vasiukov; Mikhail Kareev; Fangdi Wen; Liang Wu; Xiaoran Liu; Jak Chakhalian

doi:10.1103/PhysRevMaterials.5.064419

paper

Stabilization of high-pressure GeCu $_{2}$ O $_{4}$ spinel cuprate with quasi-1D $S = 1/2$ chains in the epitaxial thin-film form

arXiv:1909.04151 · doi:10.1103/PhysRevMaterials.5.064419

Abstract

GeCu $_{2}$ O $_{4}$ is a high-pressure recoverable cuprate with a strongly tetragonally elongated spinel structure and magnetic lattice formed by $S = 1/2$ CuO $_{2}$ linear chains with frustrated exchange interactions and exotic magnetic behavior. Here we report on the first stabilization of epitaxial thin films of GeCu $_{2}$ O $_{4}$ on (001)-oriented MgAl $_{2}$ O $_{4}$ substrate. Developed growth mode, surface morphology, crystal structure and copper valence state were characterized by \emph{in-situ} reflection high-energy electron diffraction, atomic force microscopy, X-ray reflectivity, X-ray diffraction and X-ray photoelectron spectroscopy. The availability of large single-crystalline GeCu $_{2}$ O $_{4}$ thin films paves road to comprehensive investigation of physical properties including the puzzle of magnetism and multiferroicity in this peculiar compound.

Material of this manuscript was united with arXiv:1907.07785

Stabilization of high-pressure GeCu2​O4​ spinel cuprate with quasi-1D S=1/2 chains in the epitaxial thin-film form

Abstract

References in corpus (7)

Stabilization of high-pressure GeCu $_{2}$ O $_{4}$ spinel cuprate with quasi-1D $S = 1/2$ chains in the epitaxial thin-film form