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American Institute of Physics |
Documentos disponibles de esta editorial (326)
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Navarro, I. ; Pulido, E. ; Crespo del Arco, Patricia ; Hernando Grande, Antonio | American Institute of Physics | 1993-03-15It is shown that the presence of highly anisotropic magnetic precipitates in a soft multiphased matrix can produce a remarkable hardening, even when the volume fraction of the precipitates is small. The exchange coupling between the matrix and t[...]texto impreso
Bruno, F. Y. ; Garcia Barriocanal, Javier ; Torija, M. ; Rivera Calzada, Alberto Carlos ; Sefrioui, Zouhair ; Leighton, C. ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2008-02-25Electrical transport properties of heteroepitaxial p-n junctions made of La_(0.8)Sr_(0.2)CoO_(3) and SrTi_(0.99)Nb_(0.01)O_(3) were studied. Junctions display highly rectifying current-voltage characteristics over a wide temperature range (20–30[...]texto impreso
Cremades Rodríguez, Ana Isabel ; Albrecht, M. ; Krinke, J. ; Dimitrov, R. ; Stutzmann, M. ; Strunk, H. P. | American Institute of Physics | 2000-03-01Combined electron beam induced current and transmission electron microscopy (TEM) measurements have been performed on both undoped and Si-doped AlGaN epitaxial films with aluminum contents x ranging from x = 0 to x = 0.79, in order to correlate [...]texto impreso
García Hemme, Eric ; Yu, K. M. ; Wahnon, P. ; González Díaz, Germán ; Walukiewicz, W. | American Institute of Physics | 2015-05-04We report the effect of d-levels of vanadium atoms on the electronic band structure of ZnO. Polycrystalline layers of Zn_(1-x)V_(x)O with 0 ? x ? 0.08 were synthesized using magnetron sputtering technique. Electrical measurements show that el[...]texto impreso
We report a study of metal-insulator-semiconductor (MIS) structures on InP. The interfacial state density and deep levels existing in MIS structures were measured by deep level transient spectroscopy (DLTS) technique. The electrical insulator pr[...]texto impreso
Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier | American Institute of Physics | 1999-08-15A correlative study of the electrically active grain boundary structure of ZnO polycrystals has been carried out using a scanning electron microscope/scanning tunneling microscope (SEM/STM) combined instrument. Current imaging tunneling spectros[...]texto impreso
Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | American Institute of Physics | 2001-01-29We report on complex admittance measurements on ZrO_(2):Y_(2)O_(3) (YSZ) thin films in the parallel plate geometry. Highly textured YSZ thin films, grown by rf sputtering, allow measuring complex admittance free of the effect of charge blocking [...]texto impreso
Fernández Álvarez-Estrada, Ramón ; Calvo Padilla, María Luisa | American Institute of Physics | 1980The scattering of electromagnetic waves by an infinite dielectric cylinder with variable dielectric permeability presents, in general, certain mathematical difficulties regarding the construction of rigorous solutions. We give a new divergencele[...]texto impreso
Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | American Institute of Physics | 1999-02-01In the present work, electron beam induced current (EBIC) has been applied to characterize several kinds of chemical vapor deposition diamond films. Regions of enhanced carrier recombination are detected in plan-view observations of thin films a[...]texto impreso
Schmidt, Rainer ; Basu, A. ; Brinkman, A. W. ; Klusek, Z. ; Datta, P. K. | American Institute of Physics | 2005-02-14The resistance versus temperature (R–T) characteristics of NiMn_(2)O_(4+?) thermistors have been analyzed. In the literature, electron transport in manganate spinels is commonly described by a small-polaron model for nearest neighbor hopping, bu[...]texto impreso
Gómez, I. ; Domínguez-Adame Acosta, Francisco ; Díez, E. ; Bellani, V. | American Institute of Physics | 1999-04-01We study the electron transmission probability in semiconductor superlattices where the height of the barriers is modulated by a Gaussian profile. Such structures act as efficient energy band-pass filters and, contrary to previous designs, it is[...]texto impreso
The Hamiltonian for an electron in Z^2 , interacting with a perpendicular periodic magnetic field, is shown to be gauge equivalent to a periodic Hamiltonian. The wave function of the system is computed in terms of a ground state of the continuou[...]texto impreso
The generalized covariant Dirac equation for a certain five?dimensional universe is studied. If a torsion invariant is included in the free Lagrangian, it is shown that particlelike stable solutions exist having definite positive rest energy, sp[...]texto impreso
Pérez, E. ; Castán, H. ; García, H. ; Dueñas, S. ; Bailón, L. ; Montero Álvarez, Daniel ; García-Hernansanz, R. ; García Hemme, Eric ; Olea Ariza, Javier ; González Díaz, Germán | American Institute of Physics | 2015-01In the attempt to form an intermediate band in the bandgap of silicon substrates to give it the capability to absorb infrared radiation, we studied the deep levels in supersaturated silicon with titanium. The technique used to characterize the e[...]texto impreso
ailoring the structure of nanocrystalline microstructures is an important step toward controlled design of novel nanostructured materials and devices. We demonstrate how the nanocrystalline microstructure of Co-rich ribbons can be tuned by annea[...]texto impreso
Perez de Lara, Daniel ; Alija, A. ; González Herrera, Elvira María ; Martín, J. I. ; Vélez, M. ; Colino, J. L. ; Anguita,, J. V. ; Vicent López, José Luis | American Institute of Physics | 2009-03-23Superconducting a-Mo_(3)Si and Nb films have been grown on arrays of Ni nanodots. We have studied the vortex lattice dynamics close to critical temperatures. Different vortex lattice configurations are obtained with the same array unit cell. The[...]texto impreso
Masanes, Lluís ; Müller, M.P. ; Pérez García, David ; Augusiak, Remigiusz | American Institute of Physics | 2014-12We consider a very natural generalization of quantum theory by letting the dimension of the Bloch ball be not necessarily three. We analyze bipartite state spaces where each of the components has a d-dimensional Euclidean ball as state space. In[...]texto impreso
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Tsallis, C. ; Plastino, A.R. ; Fernández Álvarez-Estrada, Ramón | American Institute of Physics | 2009-04Escort mean values or q-moments constitute useful theoretical tools for describing basic features of some probability densities such as those which asymptotically decay like power laws. They naturally appear in the study of many complex dynamica[...]texto impreso
We report on Raman scattering measurements on annealed In0.53Ga0.47As/InP layers that reveal the outdiffusion of phosphorus from, the substrate and its, possible incorporation in substitutional positions in. the In0.53Ga0.47As lattice. Raman sig[...]texto impreso
Piqueras de Noriega, Javier ; Díaz-Guerra Viejo, Carlos ; Vila Santos, María | American Institute of Physics | 2010-05-10Exchange anisotropy has been observed and investigated in single-crystalline CuO nanowires grown by thermal oxidation of Cu. The exchange bias field decreases by increasing temperature and can be tuned by the strength of the cooling field. A tra[...]texto impreso
Jones, D. B. ; Neves, R.F.C. ; Lopes, M. C. A. ; da Costa, R.F. ; Varella, M. T. do N. ; Bettega, M. H. F. ; Lima, M. A. P. ; García, G. ; Blanco Ramos, Francisco ; Brunger, M. J. | American Institute of Physics | 2015-12-14We report cross sections for electron-impact excitation of vibrational quanta in furfural, at intermediate incident electron energies (20, 30, and 40 eV). The present differential cross sections are measured over the scattered electron angular r[...]texto impreso
Chiari, Luca ; Zecca, Antonio ; Blanco Ramos, Francisco ; Brunger, M. J. | American Institute of Physics | 2016-02-28Isomerism is ubiquitous in chemistry, physics, and biology. In atomic and molecular physics, in particular, isomer effects are well known in electron-impact phenomena; however, very little is known for positron collisions. Here we report on a se[...]texto impreso
Kholmetskii, Alexsander L. ; Missevitch, Oleg V. ; Smirnov Rueda, Román ; Ivanov, Alexander R. ; Chubykalo, Andrey E. | American Institute of Physics | 2007-01-15We start with the fact that the actual consensus on the empirical verification of the standard retardation condition does not take into account the complex structure of the whole electromagnetic field in the near zone. The most rigorous and meth[...]texto impreso
González Díaz, Germán ; García Hemme, Eric ; Olea Ariza, Javier ; Pastor Pastor, David ; Bailón, L. ; Castán, H. ; Dueñas, S. ; García, H. ; Pérez, E. | American Institute of Physics | 2013-01-14Intermediate band formation on silicon layers for solar cell applications was achieved by titanium implantation and laser annealing. A two-layer heterogeneous system, formed by the implanted layer and by the un-implanted substrate, was formed. I[...]