Zobrazeno 1 - 10
of 370
pro vyhledávání: '"Postorino Paolo"'
We present a spectroscopic investigation into the vibrational and optoelectronic properties of WS2 domes in the 0-0.65 GPa range. The pressure evolution of the system morphology, deduced by the combined analysis of Raman and photoluminescence spectra
Externí odkaz:
http://arxiv.org/abs/2402.04872
Autor:
Graziotto, Lorenzo, Macheda, Francesco, Venanzi, Tommaso, Marchese, Guglielmo, Sotgiu, Simone, Ouaj, Taoufiq, Stellino, Elena, Fasolato, Claudia, Postorino, Paolo, Metzelaars, Marvin, Kögerler, Paul, Beschoten, Bernd, Calandra, Matteo, Ortolani, Michele, Stampfer, Christoph, Mauri, Francesco, Baldassarre, Leonetta
Few-layer graphene possesses low-energy carriers which behave as massive fermions, exhibiting intriguing properties in both transport and light scattering experiments. Lowering the excitation energy of resonance Raman spectroscopy down to 1.17 eV we
Externí odkaz:
http://arxiv.org/abs/2310.04071
Autor:
Pallecchi, Ilaria, Stellino, Elena, Postorino, Paolo, Iyo, Akira, Ogino, Hiraku, Affronte, Marco, Putti, Marina
The iron-based pnictide LaFe2As2 is not superconducting as-synthesized, but it becomes such below Tc around 12 K upon annealing, as a consequence of a structural transition from a phase with collapsed tetragonal crystal structure to an uncollapsed ph
Externí odkaz:
http://arxiv.org/abs/2307.08560
Autor:
Ferrante Carino, Virga Alessandra, Benfatto Lara, Martinati Miles, De Fazio Domenico, Sassi Ugo, Fasolato Claudia, Ott Anna K., Postorino Paolo, Yoon Duhee, Cerullo Giulio, Mauri Francesco, Ferrari Andrea C., Scopigno Tullio
Publikováno v:
EPJ Web of Conferences, Vol 205, p 05003 (2019)
The out-of-equilibrium Raman response of graphene is addressed by pulsed laser excitation. Phonon spectrum is rationalized by revisiting the electron-phonon picture in the light of a transient broadening of the Dirac cone.
Externí odkaz:
https://doaj.org/article/dae286571b03499c91440bd448c35696
Autor:
Stellino, Elena, D'Alo', Beatrice, Capitani, Francesco, Verseils, Marine, Brubach, Jean-Blaise, Roy, Pascale, Nucara, Alessandro, Petrillo, Caterina, Postorino, Paolo
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 controversial estimates of the metallization pressure found in the literatu
Externí odkaz:
http://arxiv.org/abs/2301.11448
Autor:
Venanzi, Tommaso, Graziotto, Lorenzo, Macheda, Francesco, Sotgiu, Simone, Ouaj, Taoufiq, Stellino, Elena, Fasolato, Claudia, Postorino, Paolo, Mišeikis, Vaidotas, Metzelaars, Marvin, Kögerler, Paul, Beschoten, Bernd, Coletti, Camilla, Roddaro, Stefano, Calandra, Matteo, Ortolani, Michele, Stampfer, Christoph, Mauri, Francesco, Baldassarre, Leonetta
We report on resonance Raman spectroscopy measurements with excitation photon energy down to 1.16 eV on graphene, to study how low-energy carriers interact with lattice vibrations. Thanks to the excitation energy close to the Dirac point at $\mathbf{
Externí odkaz:
http://arxiv.org/abs/2212.01342
Autor:
Sotgiu, Simone, Venanzi, Tommaso, Macheda, Francesco, Stellino, Elena, Ortolani, Michele, Postorino, Paolo, Baldassarre, Leonetta
Resonance Raman scattering, which probes electrons, phonons and their interplay in crystals, is extensively used in two-dimensional materials. Here we investigate Raman modes in MoSe$_2$ at different laser excitation energies from 2.33 eV down to the
Externí odkaz:
http://arxiv.org/abs/2208.02505
Autor:
Yerin, Yuriy, Varlamov, Andrey, Fasolato, Claudia, Sacchetti, Francesco, Postorino, Paolo, Petrillo, Caterina
Exploiting the theory of solitons in a nonlinear elastic medium we predict a novel phenomenon called a phononic tsunami, which is characterized by the dramatic increase of the local amplitude of phonon modes. To elucidate the possible experimental de
Externí odkaz:
http://arxiv.org/abs/2112.07226
Broadband Infrared Study of Pressure-Tunable Fano Resonance and Metallization Transition in 2H-MoTe2
Autor:
Stellino, Elena, Capitani, Francesco, Ripanti, Francesca, Verseils, Marine, Petrillo, Caterina, Dore, Paolo, Postorino, Paolo
High pressure is a proven effective tool for modulating inter-layer interactions in semiconducting transition metal dichalcogenides, which leads to significant band structure changes. Here, we present an extended infrared study of the pressure-induce
Externí odkaz:
http://arxiv.org/abs/2111.00434
Publikováno v:
In Heliyon 15 August 2024 10(15)