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Schmidt, Rainer ; Mayrhofer, Patrick ; Schmid, Ulrich ; Bittner, Achim | American Institute of Physics | 2019-02-26In this work, a comprehensive characterization of metal-insulator-semiconductor structures by impedance spectroscopy is demonstrated for the case of electrically insulating, highly c-axis oriented, 600 nm sputter-deposited AlN films on n-Si subs[...]texto impreso
Ruiz-Valdepeñas Martín de Almagro, Luis ; Vélez, M. ; Valdés Bango, F. ; Álvarez Prado, L.M. ; García Alonso, F.J. ; Martín, J.I. ; Navarro Palma, Elena ; Alameda, J.M. ; Vicent López, José Luis | American Institute of Physics | 2014-06-07Magnetization reversal processes have been studied in hybrid magnetic/superconducting Nd-Co/Nb bilayers by the comparison of out-of-plane magnetic hysteresis loops and superconducting phase diagrams as a function of magnetic layer thickness and [...]texto impreso
Temperature dependent in-plane impedance spectroscopy measurements were carried out in order to analyze the charge transport properties of functional oxide NiMn_(2)O_(4) negative temperature coefficient thermistor films deposited via aerosol dep[...]texto impreso
Bartolomé Vílchez, Javier ; Hidalgo Alcalde, Pedro ; Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | American Institute of Physics | 2014-04-21Electric field induced mechanical resonances of In2O3 microrods are studied by in-situ measurements in the chamber of a scanning electron microscope. Young's moduli of rods with different cross-sectional shapes are calculated from the resonance [...]texto impreso
Liu, Yaohua ; Tornos, J. ; te Velthuis, S. G. E. ; Freeland, J. W. ; Zhou, H. ; Steadman, P. ; Bencok, P. ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2016-04In artificial multiferroics hybrids consisting of ferromagnetic La_(0.7)Sr_(0.3)MnO_(3) (LSMO) and ferroelectric BaTiO_(3) epitaxial layers, net Ti moments are found from polarized resonant soft x-ray reflectivity and absorption. The Ti dichroic[...]texto impreso
Garcia, J. A. ; Remon, A. ; Piqueras de Noriega, Javier | American Institute of Physics | 1987-10-01The effect of the addition of Bi and Mn on the photoluminescence from ZnO ceramics has been investigated. The effect of the presence of impurities on the green luminescence band can be compared to the effect of oxidizing treatments. A narrow gre[...]texto impreso
We have measured the electrical and optical properties of blue light-emitting diodes (LEDs) based on III-V nitrides. The current-voltage characteristic is described by means of the relation I = I-0 exp(alpha V). In this equation alpha is tempera[...]texto impreso
Mártil de la Plaza, Ignacio ; González Díaz, Germán ; Prado Millán, Álvaro del ; San Andres Serrano, Enrique | American Institute of Physics | 2004-05-15The influence of H on the composition and atomic concentrations of Si, O, and N of plasma deposited SiOxNyHz films was investigated. The bonding scheme of H was analyzed by Fourier-transform infrared spectroscopy. The composition and absolute co[...]texto impreso
Mártil de la Plaza, Ignacio ; González Díaz, Germán ; Prado Millán, Álvaro del | American Institute of Physics | 2008-11-01Al/HfO(2)/SiN(x):H/n-Si metal-insulator-semiconductor capacitors have been studied by electrical characterization. Films of silicon nitride were directly grown on n-type silicon substrates by electron cyclotron resonance assisted chemical vapor [...]texto impreso
The possibility of downhill instead of two-state folding for proteins has been a very controversial topic which arose from recent experimental studies. From the theoretical side, this question has also been accomplished in different ways. Given [...]texto impreso
Cremades Rodríguez, Ana Isabel ; Narayanan, V.C. ; Piqueras de Noriega, Javier ; Lima, A.P. ; Ambacher, O. ; Stutzmann, M. | American Institute of Physics | 2001-11-01Plasma-induced molecular beam epitaxial AlInGaN heterostructures have been characterized by spatial resolved cathodoluminescence and x-ray energy dispersive microanalysis. Competitive incorporation of Al and In has been observed, with the format[...]texto impreso
Kodama, Y. ; Konopelchenko, Boris ; Martínez Alonso, Luis ; Medina Reus, Elena | American Institute of Physics | 2005-11A general scheme for determining and studying hydrodynamic type systems describing integrable deformations of algebraic curves is applied to cubic curves. Lagrange resolvents of the theory of cubic equations are used to derive and characterize t[...]texto impreso
Jones, D. B. ; da Costa, R.F. ; Varella, M. T. do N. ; Bettega, M. H. F. ; Lima, M. A. P. ; Blanco Ramos, Francisco ; García, G. ; Brunger, M. J. | American Institute of Physics | 2016-04-14We report absolute experimental integral cross sections (ICSs) for electron impact excitation of bands of electronic-states in furfural, for incident electron energies in the range 20-250 eV. Wherever possible, those results are compared to corr[...]texto impreso
Linearized hydrodynamic equations for a nonuniform anisotropic fluid are obtained from the exact Mori-Zwanzig equations for the conserved densities. In the particular case of a two-phase system with a planar equilibrium interface, these equation[...]texto impreso
Mártil de la Plaza, Ignacio ; González Díaz, Germán ; Olea Ariza, Javier | American Institute of Physics | 2012-12-01We have analyzed by means of Rutherford backscattering spectrometry (RBS) the Ti lattice location and the degree of crystalline lattice recovery in heavily Ti implanted silicon layers subsequently pulsed laser melted (PLM). Theoretical studies h[...]