Manjón, Francisco-Javier; Gallego-Parra, Samuel; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Drasar, Cestmir; Muñoz-Sanjosé, Vicente; Oeckler, Oliver(The Royal Society of Chemistry, 2021-05-21)
[EN] Two anomalous broad bands are usually found in the Raman spectrum of bulk and 2D Te-based chalcogenides, which include binary compounds, like ZnTe, CdTe, HgTe, GaTe, GeTe, SnTe, PbTe, GeTe2, As2Te3, Sb2Te3, Bi2Te3, ...
Gallego Parra, Samuel(Universitat Politècnica de València, 2017-12-27)
In this project, a structural and vibrational characterization under high-pressure of the In2Se3 compound will be carried out using the techniques of X-ray diffraction and Raman spectroscopy, respectively. It will be ...
Gallego Parra, Samuel(Universitat Politècnica de València, 2023-01-23)
[ES] Los sesquicalcogenuros con estequiometria B2X3, con A = Al, Ga e In y X = S, Se y Te, han recibido gran atención a lo largo de los últimos años, en particular en como modificarlos para obtener nuevas estructuras con ...
Gallego-Parra, Samuel; Vilaplana Cerda, Rosario Isabel; Gomis, O.; Rodríguez-Hernández, Plácida; Muñoz, Alfonso; González, Jesus Antonio; Sans-Tresserras, Juan Ángel; Popescu, Catalin; Manjón, Francisco-Javier(American Chemical Society, 2022-07-12)
[EN] The synthesis of polymorphs of alpha '-Ga2S3 at room temperature on compression/decompression is studied from a joint experimental and theoretical point of view to reveal the nature of their crystalline structures. ...
García-Sánchez, Tania María; Gallego-Parra, Samuel; Liang, Akun; Rodrigo-Ramon, José Luis; Muñoz, Alfonso; Rodriguez-Hernandez, Placida; Gonzalez-Platas, Javier; Sans-Tresserras, Juan Ángel; Cuenca-Gotor, Vanesa Paula; Osman, Hussien H.; Popescu, Catalin; Ursaki, Veaceslav; Tiginyanu, Ion M.; Errandonea, Daniel; Manjón, Francisco-Javier(The Royal Society of Chemistry, 2023-07)
[EN] The effect of pressure on the structural, vibrational, and optical properties of lead thiogallate,
PbGa2S4, crystallizing at room conditions in the orthorhombic EuGa2S4-type structure (space group
Fddd), is investigated. ...
Marí-Guaita, Julia; Gallego-Parra, Samuel; Sans-Tresserras, Juan Ángel; Velázquez, M.; Veber, Phillipe; Rodríguez-Hernández, P.; Manjón, Francisco-Javier; Muñoz, A.(Elsevier, 2021-08-05)
[EN] In this study, we report an experimental investigation of (Gd1-xYbx)(2)O-3 under high pressure by means of Raman scattering measurements complemented with ab initio calculations in pure Gd2O3. Raman spec-troscopy of ...
[EN]
GaGeTe is a layered van der Waals material composed of germanene and GaTe sublayers that has been recently predicted to be a basic Z2 topological semimetal. To date, only one polytype of GaGeTe is known with trigonal ...
[EN] This paper reports a joint experimental and theoretical study of the electronic band structure of two ordered-vacancy compounds with defect-chalcopyrite structure: CdGa2S4 and HgGa2S4. High-pressure optical-absorption ...
[EN] This joint experimental and theoretical study of the structural and vibrational properties of beta-In2S3 upon compression shows that this tetragonal defect spinel undergoes two reversible pressure-induced order¿disorder ...
Monteseguro, Virginia; Errandonea, Daniel; Achary, Srungarpu N.; Sans-Tresserras, Juan Ángel; Manjón, Francisco-Javier; Gallego-Parra, Samuel; Popescu, Catalin(American Chemical Society, 2019-08-19)
[EN] The effects of pressure on the crystal structure of aurophilic tetragonal gold iodide have been studied by means of powder X-ray diffraction up to 13.5 GPa. We found evidence of the onset of a phase transition at 1.5 ...
Gallego-Parra, Samuel; Vilaplana Cerda, Rosario Isabel; Gomis, O.; Lora da Silva, E.; Otero-de-la-Roza, A.; Rodríguez-Hernández, P.; Muñoz, A.; González, J.; Sans-Tresserras, Juan Ángel; Cuenca-Gotor, Vanesa Paula; Ibáñez, J.; Popescu, C.; Manjón, Francisco-Javier(The Royal Society of Chemistry, 2021-03-21)
[EN] We report a joint experimental and theoretical study of the low-pressure phase of ¿¿-Ga2S3 under compression. Theoretical ab initio calculations have been compared to X-ray diffraction and Raman scattering measurements ...
[EN] GaGeTe is a layered topological semimetal that has been recently found to exist in at least two different polytypes, a-GaGeTe (R3m) and b-GaGeTe (P63mc). Here we report a joint experimental and theoretical study of ...
Gallego-Parra, Samuel; Gomis, O.; Vilaplana Cerda, Rosario Isabel; Ortiz, H.M.; Perez-Gonzalez, E.; Luna Molina, Ramón; Rodríguez-Hernández, Plácida; MUÑOZ, ALFONSO; URSAKI, VEACHESLAV; TIGINYANU, IVAN; Manjón, Francisco-Javier(American Institute of Physics, 2019-03-21)
[EN] Raman scattering measurements have been performed in cadmium digallium sulphide (CdGa2S4) with defect chalcopyrite structure up to 25 GPa in order to study its pressure-induced phase transitions. These measurements ...