• Strong lensing by DHOST black holes 

  Chagoya Saldaña, Javier Fernando; Ortiz, C.; Rodríguez, Benito; Roque, Armando A. (IOP science, 2021-01-18)

  The deflection of light in the strong field limit is an important test for alternative theories of gravity. However, solutions for the metric that allow for analytic computations are not always available. We implement a ...
• BTZ entropy from topological M-theory 

  Chagoya Saldaña, Javier Fernando; Reyes Ahumada, Graciela; Sabido Moreno, Miguel (APS, 2021-03-12)

  By determining the relation between topological M-theory and the Chern-Simons actions for a gauge field constructed from the Lie algebra of either SL(2, R) × SL(2, R) or SL(2, C) × SL(2, C), depending on the sign of the ...
• Energy states in GaAs delta-doped field effect transistors under hydrostatic pressure 

  Martínez Orozco, Juan Carlos; Rodríguez Vargas, Isaac; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Elsevier, 2008)

  The study of the electronic structure in GaAs-based delta-doped field effect transistors under applied hydrostatic pressure is presented. A combination of the depletion approximation and the local density Thomas-Fermi ...
• Differential capacitance as a method of determining the presence of a quasi-bidimensional electronic gas 

  Martínez Orozco, Juan Carlos; Gaggero Sager, Luis Manuel; Stoyan, J.Vlaev (Elsevier, 2004-12)

  We present the differential capacitance profile for the delta-doped field effect transistor (δ-FET) in a GaAs matrix with both the presence and absence of a two-dimensional electronic gas produced by the delta-doped quantum ...
• Nonlinear absorption coefficient and relative refraction index change for an asymmetrical double δ-doped quantum well in GaAs with a Schottky barrier potential 

  Rojas Briseño, J.G.; Martínez Orozco, Juan Carlos; Rodríguez Vargas, Isaac; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Elsevier, 2013-09-01)

  In this work we are reporting the energy level spectrum for a quantum system consisting of an n-type double -doped quantum well with a Schottky barrier potential in a Gallium Arsenide matrix. The calculated states are taken ...
• The hydrostatic pressure effects on intersubband optical absorption of n -type δ-doped quantum well in GaAs 

  Oubram, O.; Navarro, O.; Gaggero Sager, Luis Manuel; Martínez Orozco, Juan Carlos; Rodríguez Vargas, Isaac (Elsevier, 2012-04)

  We have theoretically calculated the effects of hydrostatic pressure on subband structure and optical transitions in n -delta-doped quantum well (DDQW) in GaAs for different values of energy. The electronic structure of ...
• Nonlinear optical rectification and second and third harmonic generation in GaAs delta-FET systems under hydrostatic pressure 

  Martínez Orozco, Juan Carlos; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Elsevier, 2012-02)

  The GaAs n-type delta-doped field effect transistor is proposed as a source for nonlinear optical responses such as second order rectification and second and third harmonic generation. Particular attention is paid to the ...
• The nonlinear optical absorption and corrections to the refractive index in a GaAs n‐type delta‐doped field effect transistor under hydrostatic pressure 

  Martínez Orozco, Juan Carlos; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Wiley, 2011-08-31)

  The theoretical study of linear and nonlinear optical absorption, and the nonlinear corrections to the refractive index in a GaAs n‐type delta‐doped field effect transistor is preformed taking into account the effects of ...
• Independence and matching number for some token graphs 

  de Alba, Hernán; Carballosa, Walter; Leaños, Jesús; Rivera Martínez, Luis Manuel (Combinatorial Mathematics Society of Australasia (CMSA) by The University of Queensland, 2020)

  Let G be a graph of order n and let k ∈ {1, . . . , n−1}. The k-token graph Fk(G) of G is the graph whose vertices are the k-subsets of V (G), where two vertices are adjacent in Fk(G) whenever their symmetric difference is ...
• On Pillai's problem with the Fibonacci and Pell sequences 

  Hernández Hernández, Santos; Florian, Luca; Rivera Martínez, Luis Manuel (SPRINGER, 2019)

  Let (Fn)n≥0 and (Pn)n≥0 be the Fibonacci and Pell sequences given by the initial conditions F0 = 0, F1 = 1, P0 = 0, P1 = 1 and the recurrence formulas Fn+2 = Fn+1 + Fn, Pn+2 = 2Pn+1 + Pn for all n ≥ 0, respectively. In ...
• The packing number of the double vertex graph of the path graph 

  Gómez Soto, José Manuel; Leaños, Jesús; Ríos Castro, Luis Manuel; Rivera Martínez, Luis Manuel (Elsevier, 2018)

  Neil Sloane showed that the problem of determining the maximum size of a binary code of constant weight 2 that can correct a single adjacent transposition is equivalent to finding the packing number of a certain graph. ...
• Hamiltonicity of token graphs of fan graphs 

  Rivera Martínez, Luis Manuel; Trujillo-Negrete, Ana Laura (Slovenian Discrete and Applied Mathematics Society and the University of Primorska, FAMNIT., 2018)

  In this note we show that the token graphs of fan graphs are Hamiltonian. This result provides another proof of the Hamiltonicity of Johnson graphs and also extends previous results obtained by Mirajkar and Priyanka on ...
• Nonlinear optical properties in an asymmetric double δ‐doped quantum well with a Schottky barrier: Electric field effects 

  Rojas Briseño, José Guadalupe; Martínez Orozco, Juan Carlos; Rodríguez Vargas, Isaac; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Wiley, 2013-09)

  The effect of an externally applied static electric field on the nonlinear optical response in a GaAs asymmetric double urn:x-wiley:15213951:media:pssb201350050:pssb201350050-math-0003‐doped quantum well is studied. The ...
• Asymmetric GaAs n-type double δ-doped quantum wells as a source of intersubband-related nonlinear optical response: Effects of an applied electric field 

  Rodríguez Magdaleno, Karla Arely; Martínez Orozco, Juan Carlos; Rodríguez Vargas, Isaac; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Elsevier, 2014-03)

  In this work, the conduction band electron states and the associated intersubband-related linear and nonlinear optical absorption coefficient and relative refractive index change are calculated for an asymmetric double ...
• Impurity-Related Nonlinear Optical Absorption in Delta-Doped Quantum Rings 

  Restrepo Arango, Ricardo León; Martínez Orozco, Juan Carlos; Barseghyan, Manuk G.; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (International Center for Scientific Research, 2014)

  Using a variational procedure within the efective mass approximation, we have calculated the hydrogenic impurity binding energy as well as the impurity-related nonlinear optical absorption in a single quantum ring with ...
• Impurity-related nonlinear optical properties in delta-doped quantum rings: Electric field effects 

  Restrepo Arango, Ricardo León; Morales Aramburo, Álvaro Luis; Martínez Orozco, Juan Carlos; Baghramyan, H. M.; Barseghyan, Manuk G.; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto (Elsevier, 2014-11)

  Using a variational procedure within the effective mass approximation, we have calculated the donor impurity binding energy for the ground (1s-like) and the excited states as well as the impurity-related nonlinear optical ...
• Propiedades de transmisión de electrones de Dirac a través de superredes Cantor en grafenoTransmission properties of Dirac electrons through Cantor monolayer graphene superlattices 

  Rodríguez González, R.; Martínez Orozco, Juan Carlos; Madrigal Melchor, J.; Rodríguez Vargas, I. (Universidad De La Salle Bajío, 2014-09-01)

  En este trabajo usamos el método de la matriz de transferencia para estudiar el tunelamiento de los electrones de Dirac a través de superredes aperiodicas en grafeno. Consideramosuna hoja de grafeno depositada ...
• Absorption coefficient and relative refractive index change for a double δ-doped GaAs MIGFET-like structure: Electric and magnetic field effects 

  Martínez Orozco, Juan Carlos; Rodríguez Magdaleno, K.A.; Suárez López, J.R.; Duque, Carlos Alberto; Restrepo Arango, Ricardo León (Elsevier, 2016-04)

  In this work we present theoretical results for the electronic structure as well as for the absorption coefficient and relative refractive index change for an asymmetric double δ-doped like confining potential in the active ...
• Linear and nonlinear optical properties in an asymmetric double quantum well under intense laser field: Effects of applied electric and magnetic fields 

  Yesilgul, U.; Al, E.B.; Martínez Orozco, Juan Carlos; Restrepo Arango, Ricardo León; Mora Ramos, Miguel Eduardo; Duque, Carlos Alberto; Ungan, F.; Kasapoglu, E. (Elsevier, 2016-08)

  In the present study, the effects of electric and magnetic fields on the linear and third-order nonlinear optical absorption coefficients and relative change of the refractive index in asymmetric GaAs/GaAlAs double quantum ...
• Exciton binding energy in coupled double zinc blende GaN/InGaN quantum well 

  Rojas Briseño, J.G.; Miranda Pedreza, Guillermo L.; Martínez Orozco, Juan Carlos (Wiley, 2016-11-08)

  In this work, the study of the 1s‐like exciton states and binding energy is presented for coupled double zinc blende GaN/InGaN quantum wells. The effective mass approximation and a variational procedure are the key theoretical ...

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