50 citations · 174 across the 21 of their papers we have counts for
21 papers
Isolating the natural edges of bilayer graphene in gate-defined mesoscopic devices
Francesco Blanda, Grazia Raciti, Thilo Glatzel +8
We introduce a graphite-gated architecture for bilayer graphene devices in which the active device is completely isolated from the natural graphene edges. Using a single patterned…
Thermal conductivity tuning of scalable nanopatterned silicon membranes measured with a three-probe method
Jose M. Sojo-Gordillo, Alex Rodriguez-Iglesias, Dominik M. Koch +5
Phononic silicon structures have emerged as an integrable and scalable nanosystem for tailoring thermal transport. However, their widespread adoption has been limited by their comp…
Direct observation of strain and confinement shaping the hole subbands of Ge quantum wells
Enrico Della Valle, Arianna Nigro, Miki Bonacci +6
Germanium-silicon-germanium (Ge/SiGe) heterostructures have emerged as a promising platform for hole-spin quantum technologies and high-mobility electronics, where st…
Quantifying Strain and its Effect on Charge Transport in Ge/Si Core/Shell Nanowires
Aswathi K. Sivan, Nicolas Forrer, Aakash Shandilya +12
Strain engineering in semiconductor nanostructures offers a promising route to optimize electronic and optical properties for advanced quantum technologies. This study explores the…
Low-loss frequency-tunable Josephson junction array cavities on Ge/SiGe heterostructures with a tapered etching approach
Franco De Palma, Elena Acinapura, Wonjin Jang +5
Ge/SiGe heterostructures represent a promising platform for hosting various quantum devices such as hole spin qubits and Andreev spin qubits. However, the compatibility of such het…
Bandgap Engineering On Demand in GaAsN Nanowires by Post-Growth HydrogennImplantation
Nadine Denis, Akant Sharma, Elena Blundo +9
Bandgap engineering in semiconductors is required for the development of photonic and optoelectronic devices with optimized absorption and emission energies. This is usually achiev…
Unraveling energy flow mechanisms in semiconductors by ultrafast spectroscopy: Germanium as a case study
Grazia Raciti, Begoña Abad, Riccardo Dettori +8
Semiconductor materials are the foundation of modern electronics, and their functionality is dictated by the interactions between fundamental excitations occurring on (sub-)picosec…
Phonon interference effects in GaAs-GaP superlattice nanowires
Chaitanya Arya, Johannes Trautvetter, Jose M. Sojo-Gordillo +8
Fine-tuning the functional properties of nanomaterials is crucial for technological applications. Superlattices, characterized by periodic repetitions of two or more materials in d…
Impact of surface treatments on the transport properties of germanium 2DHGs
Nikunj Sangwan, Eric Jutzi, Christian Olsen +4
Holes in planar germanium (Ge) heterostructures show promise for quantum applications, particularly in superconducting and spin qubits, due to strong spin-orbit interaction, low ef…
A backgate for enhanced tunability of holes in planar germanium
Luigi Ruggiero, Arianna Nigro, Ilaria Zardo +1
Planar semiconductor heterostructures offer versatile device designs and are promising candidates for scalable quantum computing. Notably, heterostructures based on strained german…
High quality CVD deposition of Ge layers for Ge/SiGe Quantum Well heterostructures
Arianna Nigro, Eric Jutzi, Nicolas Forrer +3
A great deal of interest is directed nowadays towards the development of innovative technologies in the field of quantum information and quantum computing, with emphasis on obtaini…
GaAs/GaP Superlattice Nanowires for Tailoring Phononic Properties at the Nanoscale: Implications for Thermal Engineering
Aswathi K. Sivan, Begoña Abad, Tommaso Albrigi +8
The possibility to tune the functional properties of nanomaterials is key to their technological applications. Superlattices, i.e., periodic repetitions of two or more materials in…
In-plane thermal diffusivity determination using beam-offset frequency-domain thermoreflectance with a one-dimensional optical heat source
Kai Xu, Jiali Guo, Grazia Raciti +6
We present an innovative contactless method suitable to study in-plane thermal transport based on beam-offset frequency-domain thermoreflectance using a one-dimensional heat source…
Phonon transport across twin boundaries and twin superlattices
Kim López-Güell, Nicolas Forrer, Xavier Cartoixà +2
Crystal phase engineering gives access to new types of superlattices where, rather than different materials, different crystal phases of the same material are juxtaposed. Here, by…
Low charge-noise nitrogen-vacancy centers in diamond created using laser writing with a solid-immersion lens
Viktoria Yurgens, Josh A. Zuber, Sigurd Flågan +6
We report on pulsed-laser induced generation of nitrogen-vacancy (NV) centers in diamond facilitated by a solid-immersion lens (SIL). The SIL enables laser writing at energies as l…
Probing Lattice Dynamics and Electronic Resonances in Hexagonal Ge and SixGe1-x Alloys in Nanowires by Raman Spectroscopy
Diego de Matteis, Marta De Luca, Elham M. T. Fadaly +5
Recent advances in nanowire synthesis have enabled the realization of crystal phases that in bulk are attainable only under extreme conditions, i.e. high temperature and/or high pr…
Nanowires for heat conversion
Milo Yaro Swinkels, Ilaria Zardo
This review focuses on the investigation and enhancement of the thermoelectric properties of semiconducting nanowires (NWs). NWs are nanostructures with typical diameters between f…
Spatially mapping the thermal conductivity of graphene by an opto-thermal method
Oliver Braun, Roman Furrer, Pascal Butti +5
Mapping the thermal transport properties of materials at the nanoscale is of critical importance for optimizing heat conduction in nanoscale devices. Several methods to determine t…
Experimental demonstration of the suppression of optical phonon splitting in 2D materials by Raman spectroscopy
Marta De Luca, Xavier Cartoixà, David I. Indolese +7
Raman spectroscopy is one of the most extended experimental techniques to investigate thin-layered 2D materials. For a complete understanding and modeling of the Raman spectrum of…
New insights in the lattice dynamics of monolayers, bilayers, and trilayers of WSe2 and unambiguous determination of few-layer-flakes' thickness
Marta De Luca, Xavier Cartoixà, Javier Martín-Sánchez +4
Among the most common few-layers transition metal dichalcogenides (TMDs), WSe2 is the most challenging material from the lattice dynamics point of view. Indeed, for a long time the…
Effects of Dielectric Stoichiometry on the Photoluminescence Properties of Encapsulated WSe2 Monolayers
Javier Martín-Sánchez, Antonio Mariscal, Marta De Luca +8
Two-dimensional transition-metal-dichalcogenide semiconductors have emerged as promising candidates for optoelectronic devices with unprecedented properties and ultra-compact perfo…