Epitaxial stabilization of thin films of the frustrated Ge-based spinels

Denis M. Vasiukov, Mikhail Kareev, Fangdi Wen, Liang Wu, Padraic Shafer, Elke Arenholz, Xiaoran Liu, Jak Chakhalian

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

Frustrated magnets can host numerous exotic many-body quantum and topological phenomena. GeNi2O4 is a three-dimensional S=1 frustrated magnet with an unusual two-stage transition to the two-dimensional antiferromagnetic ground state, while GeCu2O4 is a high-pressure phase with a strongly tetragonally elongated spinel structure and magnetic lattice formed by S=1/2 CuO2 linear chains with frustrated interchain exchange interactions and exotic magnetic behavior. Here, we report on the thin-film epitaxial stabilization of these two compounds. The developed growth mode, surface morphology, crystal structure, and copper valence state were characterized by in situ reflection high-energy electron diffraction, atomic force microscopy, x-ray reflectivity, x-ray diffraction, x-ray photoelectron spectroscopy, and resonant x-ray absorption spectroscopy. Our results pave an alternative route to the comprehensive investigation of the puzzling magnetic properties of these compounds and the exploration of emergent features driven by strain.

Originalspråkengelska
Artikelnummer064419
TidskriftPhysical Review Materials
Volym5
Nummer6
DOI
StatusPublished - 2021 juni

Ämnesklassifikation (UKÄ)

  • Den kondenserade materiens fysik

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