In this work we present a ¿rst-principles density functional study of the vibrational properties of ZnAl2
O4
and ZnGa2
O4 as function of hydrostatic pressure. Based on our previous structural characterization of these
two ...
[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 ...
Ruiz Fuertes, Javier; Gomis, O.; León Luis, S. F.; Schrodt, N.; Manjón Herrera, Francisco Javier; Ray, Sudeshna; Santamaría Pérez, David; Sans Tresserras, Juan Ángel; Ortiz, H. M.; Errandonea, Daniel; Ferrer Roca, Chantal; Segura, A.; Martínez García, Domingo; Lavin, V.; Rodríguez Mendoza, U. R.; Muñoz, A.(IOP Publishing: Hybrid Open Access, 2016-01-15)
A structural transformation from the zircon-type structure to an amorphous phase has been found in YVO4:Eu3+ nanoboxes at high pressures above 12.7 GPa by means of x-ray diffraction measurements. However, the pair distribution ...
A pressure-induced phase transition, associated with an increase of the coordination number of In and Ta, is detected beyond 13 GPa in InTaO4 by combining synchrotron x-ray diffraction and Raman measurements in a diamond-anvil ...
Gomis Hilario, Oscar; Santamaría-Pérez, D.; Vilaplana Cerda, Rosario Isabel; Luna Molina, Ramón; Sans, J. A.; Manjón Herrera, Francisco Javier; Errandonea, D.; Pérez-González, E.; Rodríguez-Hernández, P.; Muñoz, A.; Tiginyanu, I. M.; Ursaki, V. V.(Elsevier, 2014-01-15)
In this work, we focus on the study of the structural and elastic properties of mercury digallium sulfide (HgGa2S4) at high pressures. This compound belongs to the family of AB(2)X(4) ordered-vacancy compounds and exhibits ...
Vilaplana Cerda, Rosario Isabel; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Andrada-Chacón, A.; Sánchez-Benitez, J.; Popescu, C.; Gomis, O.; Pereira, A. L. J.; García-Domene, B.; Rodríguez-Hernández, P.; Muñoz, A.; Daisenberger, D.; Oeckler, O.(Elsevier, 2016-11-15)
We report high-pressure X-ray diffraction and electrical measurements of the topological insulator SnBi2Te4 at room temperature. The pressure dependence of the structural properties of the most stable phase of SnBi2Te4 at ...
IBAÑEZ, JORDI; Sans-Tresserras, Juan Ángel; Cuenca-Gotor, Vanesa Paula; OLIVA, R.; Gomis, O.; Rodríguez-Hernández, Plácida; MUÑOZ, A.; Rodriguez-Mendoza, U.R.; Velazquez, M.; Veber, P.; Popescu, Catalin; Manjón, Francisco-Javier(American Chemical Society, 2020-07-20)
[EN] We report a joint experimental and theoretical investigation of the high pressure structural and vibrational properties of terbium sesquioxide (Tb2O3). Powder X-ray diffraction and Raman scattering measurements show ...
The structural and vibrational properties of bismuth selenide (Bi 2Se 3) have been studied by means of x-ray diffraction and Raman scattering measurements up to 20 and 30 GPa, respectively. The measurements have been ...
[EN] We report a characterization of the high-pressure behavior of zinc iodate, Zn(IO3)(2). By the combination of x-ray diffraction, Raman spectroscopy, and first-principles calculations we have found evidence of two subtle ...
Monteseguro, V.; Rodriguez-Hernandez, P.; Ortiz, H. M.; Venkatramu, V.; Manjón, F.J.; Jayasankar, C. K.; Lavin, V.; Muñoz, A.(The Royal Society of Chemistry, 2015)
[EN] An ab initio study of the structural, elastic and vibrational properties of the lutetium gallium garnet (Lu3Ga5O12) under pressure has been performed in the framework of the density functional theory, up to 95 GPa. ...
Compresed BiTeBr has been studied from a joint experimental and theoretical perspective. Room-temperature
x-ray diffraction, Raman scattering, and transport measurements at high pressures have been performed in this
layered ...
[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 ...
García-Domene, B.; Sans Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Ovsyannikov, Sergey V.; Dubrovinsky, L.S.; Martinez-Garcia, D.; Gomis, O.; Errandonea, D.; Moutaabbid, H.; Le Godec, Y.; Ortiz, H.M.; Muñoz, A.; Rodríguez-Hernández, P.; Popescu, C.(American Chemical Society, 2015-12-31)
This work reports the high-pressure and high-temperature (HP-HT)
synthesis of pure rhombohedral (corundum-type) phase of indium oxide (In2O3)
from its most stable polymorph, cubic bixbyite-type In2O3, using a multianvil ...
Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Pérez-González, E.; Ortiz, H. M.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, A.; Alonso-Gutiérrez, P.; Sanjuán, M. L.; Ursaki, V. V.; Tiginyanu, I. M.(IOP Publishing: Hybrid Open Access, 2013-04-24)
Order-disorder phase transitions induced by thermal annealing have been studied in the ordered-vacancy compound ZnGa2Se4 by means of Raman scattering and optical absorption measurements. The partially disordered as-grown ...
[EN] This paper reports an experimental and theoretical investigation on the electronic structure of bismuth selenide (Bi2Se3) up to 9 GPa. The optical gap of Bi2Se3 increases from 0.17 eV at ambient pressure to 0.45 eV ...
Cuenca Gotor, Vanesa Paula; Gomis, O.; Sans-Tresserras, Juan Ángel; Manjón Herrera, Francisco Javier; Rodríguez Hernández, P.; Muñoz, A.(AIP Publishing, 2016-10)
The formation of a new compound with stoichiometry As4O62He at relatively low pressure
(3 GPa) has been recently reported when arsenolite (As4O6) powder is compressed with helium as a
pressure-transmitting medium. In ...
Panchal, V.; López Moreno, S.; Santamaría-Pérez, D.; Errandonea, D.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, A.; Achary, S. N.; Tyagi, A. K.(American Physical Society, 2011-07-07)
X-ray diffraction and Raman-scattering measurements on cerium vanadate have been performed up to 12 and 16 GPa, respectively. Experiments reveal at 5.3 GPa the onset of a pressure-induced irreversible phase transition from ...