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González Díaz, Germán ; Artús, L. ; Blanco, N ; Cuscó, R. ; Hernández, S. | American Institute of Physics | 2003-03-01Raman scattering has been used to study the lattice recovery and electrical activation of Si+-implanted In0.53Ga0.47 As achieved by rapid thermal annealing. The degree of crystallinity recovery, of totally amorphized samples is studied for annea[...]texto impreso
Mártil de la Plaza, Ignacio ; González Díaz, Germán ; Olea Ariza, Javier ; Prado Millán, Álvaro del | American Institute of Physics | 2011-06-01We have analyzed the structural and optical properties of Si implanted with very high Ti doses and subsequently pulsed-laser melted (PLM). After PLM, all samples exhibit an abrupt and roughly uniform, box-shaped Ti profile, with a concentration [...]texto impreso
Garcia March, M. A. ; Jimenez Villacorta, F. ; Quesada, A. ; De la Venta, J. ; Carmona Tejero, Noemi ; Lorite, I. ; LLopis, J. ; Fernandez, J. F. | American Institute of Physics | 2010-01-15We recently reported the observation of room temperature ferromagnetism in mixtures of ZnO and Co_3O_4 despite the diamagnetic and antiferromagnetic character of these oxides, respectively. Here, we present a detailed study on the electronic str[...]texto impreso
Most often in chemical physics, long range van der Waals surface interactions are approximated by the exact asymptotic result at vanishing distance, the well known additive approximation of London dispersion forces due to Hamaker. However, the d[...]texto impreso
This review article is concerned with a recently ncovered connection between operator spaces, a noncommutative extension of Banach spaces, and quantum nonlocality, a striking phenomenon which underlies many of the applications of quantum mechani[...]texto impreso
By an application of the geometrical techniques of Lie, Cohen, and Dickson it is shown that a system of differential equations of the form [x^(r_i)]_i = F_i; (where r_i > 1 for every i = 1 , ... ,n) cannot admit an infinite number of pointlike [...]texto impreso
By an application of the geometrical techniques of Lie, Cohen, and Dickson it is shown that a system of differential equations of the form [x^(r_i)]_i = F_i(where r_i > 1 for every i = 1 , ... ,n) cannot admit an infinite number of pointlike sy[...]texto impreso
Gómez-Ullate Otaiza, David ; Lafortune, S. ; Winternitz, P. | American Institute of Physics | 1999-06The Lie point symmetries of a coupled system of two nonlinear differential-difference equations are investigated. It is shown that in special cases the symmetry group can be infinite dimensional, in other cases up to ten dimensional. The equatio[...]texto impreso
We consider the Manin-Radul and Jacobian supersymmetric KP hierarchies from the point of view of the tau-function formalism. Solutions of their associated systems of Sato equations are characterized in terms of correlation functions of supersymm[...]texto impreso
The variation of the electron acoustic signal as a function of temperature in ceramic materials has been studied. Scanning electron acoustic microscopy (SEAM) contrast in MgO single crystals and in reaction bonded SiC, between 100 and 273 K, is [...]texto impreso
Romero, J.J. ; Cuadrado, R. ; Arroyo, A. ; García, M. A. ; Hernando Grande, Antonio ; Cortés Gil, R ; González Calbet, J. M. ; Vallet Regí, V. | American Institute of Physics | 2006-04-15Data are presented on the thermal dependence of the hysteretic properties of cationic vacancies including manganite samples of composition LaMnO_(3+?)(?=0.05 and 0.12). Our results evidence the presence in both samples of two magnetic phases hav[...]texto impreso
Mártil de la Plaza, Ignacio ; Prado Millán, Álvaro del ; San Andres Serrano, Enrique | American Institute of Physics | 2001-08-01Bulk properties of SiNx:H thin film dielectrics and interface characteristics of SiNx:H/Si devices are studied by a combination of electrical measurements (capacitance-voltage and current-voltage characteristics) and defect spectroscopy (electro[...]texto impreso
Ciliberti, S. ; Grigera, T.S. ; Martín Mayor, Víctor ; Parisi, G. ; Verrocchio, P. | American Institute of Physics | 2004-06Despite the presence of topological disorder, phonons seem to exist also in glasses at very high frequencies (THz) and they remarkably persist into the supercooled liquid. A universal feature of such a systems is the Boson peak, an excess of sta[...]texto impreso
The exponential solutions of the Darboux equations for conjugate nets is considered. It is shown that rank-one constraints over the right derivatives of invertible operators on an arbitrary linear space give solutions of the Darboux system, whic[...]texto impreso
Martín Mayor, Víctor ; Mézard, Marc ; Parisi, Giorgio ; Verrocchio, Paolo | American Institute of Physics | 2001-05-08A computation of the dynamical structure factor of topologically disordered systems, where the disorder can be described in terms of Euclidean random matrices, is presented. Among others, structural glasses and supercooled liquids belong to that[...]