27 citations · 99 across the 7 of their papers we have counts for
7 papers
Heterogeneous ferroelectricity and conductivity of oxidized BaTiO crystals: the role of nanoscale phase segregation in the surface region
Christian Rodenbücher, Gustav Bihlmayer, Susan Trolier-McKinstry +3
We investigate the effect of thermal oxidation on BaTiO single crystals. Our results reveal that, even at moderate temperatures of up to 1000 °C, complex segregation mechanisms…
Filamentary superconductivity of resistively-switched strontium titanate
K. Szot, C. Rodenbücher, K. Rogacki +7
SrTiO, although a wide gap insulator, has long been known to become metallic and superconducting at extremely low doping levels. This has given rise to questions concerning the…
A physical method for investigating defect chemistry in solid metal oxides
Christian Rodenbücher, Carsten Korte, Thorsten Schmitz-Kempen +2
The investigation of the defect chemistry of solid oxides is of central importance for the understanding of redox processes. This can be performed by measuring conductivity as a fu…
Detection of confined current paths on oxide surfaces by local-conductivity atomic force microscopy with atomic resolution
C. Rodenbücher, G. Bihlmayer, W. Speier +6
The analysis of the electronic surface properties of transition metal oxides being key materials for future nanoelectronics requires a direct characterization of the conductivity w…
Hafnium carbide formation in oxygen deficient hafnium oxide thin films
C. Rodenbücher, E. Hildebrandt, K. Szot +6
On highly oxygen deficient thin films of hafnium oxide (hafnia, HfO) contaminated with adsorbates of carbon oxides, the formation of hafnium carbide (HfC) at the surfac…
Inhomogeneity of donor doping in SrTiO3 substrates studied by fluorescence-lifetime imaging microscopy
C. Rodenbücher, T. Gensch, W. Speier +7
Fluorescence-lifetime imaging microscopy (FLIM) was applied to investigate the donor distribution in SrTiO3 single crystals. On the surfaces of Nb- and La-doped SrTiO3, structures…
Insulator-to-metal transition of SrTiO3:Nb single crystal surfaces induced by Ar+ bombardment
C. Rodenbücher, S. Wicklein, R. Waser +1
In this paper, the effect of Ar+ bombardment of SrTiO3:Nb surface layers is investigated on the macro- and nanoscale using surface-sensitive methods. After bombardment, the stoichi…