Ruiz-Fuertes, J.; Gomis, O.; SEGURA, A.; Bettinelli, M.; Burianek, M.; Muehlberg, M.(American Institute of Physics, 2018-01)
[EN] In this letter, we have investigated the electronic structure of A(x)Ba(1-x)Nb(2)O(6) relaxor ferroelectrics on the basis of optical absorption spectroscopy in unpoled single crystals with A = Sr and Ca under high ...
We present an experimental and theoretical lattice-dynamical study of InN at high hydrostatic pressures. We perform Raman scattering measurements on five InN epilayers, with different residual strain and free electron ...
We report on high-pressure optical absorption measurements on InN epilayers with a range of free-electron concentrations (5×1017–1.6×1019 cm−3) to investigate the effect of free carriers on the pressure coefficient of the ...
Ibanez, J.; Manjón Herrera, Francisco Javier; Segura, A.; Oliva, R.; Cusco, R.; Vilaplana Cerda, Rosario Isabel; Yamaguchi, T.; Nanishi, Y.; Artus, L.(American Institute of Physics, 2011)
We perform Raman-scattering measurements at high hydrostatic pressures on c-face and a-face InN layers to investigate the high-pressure behavior of the zone-center optical phonons of wurtzite InN. Linear pressure coefficients ...
In this paper, we report the angle-dispersive x-ray diffraction data of barite, BaSO 4, measured in a diamond-anvil cell up to a pressure of 48 GPa, using three different fluid pressure-transmitting media (methanol-ethanol ...
We report an experimental and theoretical lattice dynamics study of bismuth telluride (Bi2Te3) up to 23 GPa together with an experimental and theoretical study of the optical absorption and reflection up to 10 GPa. The ...
[EN] Optical absorption measurements at high pressure have been performed in two phases of the ordered -vacancy compound (OVC) ZnGa2Se4: defect stannite (DS) and defect chalcopyrite (DC). The direct bandgap energy of both ...
García-Domene, B.; Sans Tresserras, Juan Ángel; Gomis, O.; Manjón Herrera, Francisco Javier; Ortiz, H. M.; Errandonea, Daniel; Santamaría Pérez, David; Martinez-Garcia, D.; Vilaplana Cerda, Rosario Isabel; Pereira, A. L. J.; Morales-Garcia, A.; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Popescu, Catalin; Segura, A.(American Chemical Society, 2014-09-04)
High-pressure powder X-ray diffraction and Raman scattering measurements in cubic bixbyite-type indium oxide (c-In2O3) have been performed at room temperature. On increasing pressure c-In2O3 undergoes a transition to the ...
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 ...
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] 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 ...