125 citations · 444 across the 19 of their papers we have counts for
11 papers · 1 filter
Revealing the KH2PO4 soft-mode coupling mechanism with infrared spectroscopy under pressure
D. Santos-Cottin, S. Nasrallah, F. Capitani +4
We measured the far-infrared reflectivity of a KH2PO4 single crystal up to pressures of 2 GPa in the ferroelectric and paraelectric phases. We find that the nu4 vibrational mode of…
Far-Infrared Signatures for a Two-Steps Pressure-Driven Metallization in Transition Metal Dichalcogenides
Elena Stellino, Beatrice D'Alo', Francesco Capitani +6
We present a high-pressure investigation of the semiconductor-to-metal transition in MoS2 and WS2 carried out by synchrotron-based far-infrared spectroscopy, to reconcile the contr…
Broadband Infrared Study of Pressure-Tunable Fano Resonance and Metallization Transition in 2H-MoTe2
Elena Stellino, Francesco Capitani, Francesca Ripanti +4
High pressure is a proven effective tool for modulating inter-layer interactions in semiconducting transition metal dichalcogenides, which leads to significant band structure chang…
Infrared study of the pressure-induced isostructural metallic transition in MoWS
Elena Stellino, Francesca Ripanti, Giacomo Nisini +3
Ternary compounds of Transition Metal Dichalcogenides are emerging as an interesting class of crystals with tunable electronic properties, which make them attractive for nano-elect…
Structural phase transition and bandgap control through mechanical deformation in layered semiconductors 1T-ZrX2 (X = S, Se)
Edoardo Martino, David Santos-Cottin, Florian Le Mardele +10
Applying elastic deformation can tune a material physical properties locally and reversibly. Spatially modulated lattice deformation can create a bandgap gradient, favouring photo-…
Probing intraband excitations in ZrTe: a high-pressure infrared and transport study
D. Santos-Cottin, M. Padlewski, E. Martino +12
Zirconium pentatetelluride, ZrTe5, shows remarkable sensitivity to hydrostatic pressure. In this work we address the high-pressure transport and optical properties of this compound…
Emergent Dirac carriers across a pressure-induced Lifshitz transition in black phosphorus
P. Di Pietro, M. Mitrano, S. Caramazza +11
The phase diagrams of correlated systems like cuprates or pnictides high-temperature superconductors are characterized by a topological change of the Fermi surface under continuous…
Infrared study of the quasi-two-dimensional electron system at the interface between SrTiO and crystalline or amorphous LaAlO
A. Nucara, M. Corasaniti, A. Kalaboukhov +9
We have used grazing-angle infrared spectroscopy to detect the Berreman effect (BE) in the quasi-two-dimensional electron system (q-2DES) which forms spontaneously at the interface…
Coexistence of pressure-induced structural phases in bulk black phosphorus: a combined x-ray diffraction and Raman study up to 18 GPa
B. Joseph, S. Caramazza, F. Capitani +7
We report a study of the structural phase transitions induced by pressure in bulk black phosphorus by using both synchrotron x-ray diffraction for pressures up to 12.2 GPa and Rama…
High-pressure behavior of methylammonium lead iodide (MAPbI3) hybrid perovskite
Francesco Capitani, Carlo Marini, Simone Caramazza +6
In this paper we provide an accurate high-pressure structural and optical study of MAPbI3 hybrid perovskite. Structural data show the presence of a phase transition towards an orth…
Vibrational spectrum of solid picene (C_22H_14)
B. Joseph, L. Boeri, L. Malavasi +11
Recently, Mitsuhashi et al., have observed superconductivity with transition temperature up to 18 K in potassium doped picene (C22H14), a polycyclic aromatic hydrocarbon compound […