23 citations · 66 across the 10 of their papers we have counts for
10 papers
Electronic structure, band offset, and interface electron population of the LaInO/BaSnO system
G. Hoffmann, A. A. Riaz, C. Kalha +7
Perovskite oxides and their heterostructures exhibit a wide range of functional properties. Among these materials, BaSnO/LaInO heterostructures form high-mobility two-dimen…
Enabling two-dimensional electron gas with high room-temperature electron mobility exceeding 100 cm/Vs at a perovskite oxide interface
Georg Hoffmann, Martina Zupancic, Aysha A. Riaz +7
In perovskite oxide heterostructures, bulk functional properties coexist with emergent physical phenomena at epitaxial interfaces. Notably, charge transfer at the interface between…
Stability of near surface nitrogen vacancy centers using dielectric surface passivation
Ravi Kumar, Saksham Mahajan, Felix Donaldson +8
We study the photo-physical stability of ensemble near-surface nitrogen vacancy (NV) centers in diamond under vacuum and air. The optically detected magnetic resonance contrast of…
Revealing the bonding nature and electronic structure of early transition metal dihydrides
Curran Kalha, Laura E. Ratcliff, Giorgio Colombi +11
Hydrogen as a fuel plays a crucial role in driving the transition to net zero greenhouse gas emissions. To realise its potential, obtaining a means of efficient storage is paramoun…
Capturing the dynamics of Ti diffusion across TiW/Cu heterostructures using X-ray photoelectron spectroscopy
Curran Kalha, Pardeep K. Thakur, Tien-Lin Lee +4
Interdiffusion phenomena between adjacent materials are highly prevalent in semiconductor device architectures and can present a major reliability challenge for the industry. To fu…
Satellites in the Ti~1 core level spectra of SrTiO and TiO
Atsushi Hariki, Keisuke Higashi, Tatsuya Yamaguchi +7
Satellites in core level spectra of photoelectron spectroscopy (PES) can provide crucial information on the electronic structure and chemical bonding in materials, particular in tr…
Tackling Disorder in -GaO
Laura E. Ratcliff, Takayoshi Oshima, Felix Nippert +19
GaO and its polymorphs are attracting increasing attention. The rich structural space of polymorphic oxide systems such as GaO offers potential for electronic struc…
Evaluation of the Thermal Stability of TiW/Cu Heterojunctions Using a Combined SXPS and HAXPES Approach
Curran Kalha, Michael Reisinger, Pardeep. K. Thakur +7
Power semiconductor device architectures require the inclusion of a diffusion barrier to suppress, or at best prevent the interdiffusion between the copper metallisation interconne…
Lifetime effects and satellites in the photoelectron spectrum of tungsten metal
Curran Kalha, Laura E. Ratcliff, Julio J. Gutiérrez Moreno +10
Tungsten is an important and versatile transition metal and has a firm place at the heart of many technologies. A popular experimental technique for the characterisation of tungste…
Thermal and Oxidation Stability of TiW Diffusion Barriers Investigated by Soft and Hard X-ray Photoelectron Spectroscopy
Curran Kalha, Sebastian Bichelmaier, Nathalie K. Fernando +10
The binary alloy of titanium-tungsten (TiW) is an established diffusion barrier in high-power semiconductor devices, owing to its ability to suppress the diffusion of copper from t…