Rafael Rangel
Simón Bolívar University
Physics Department
Apartado Postal 89000, Caracas 1080-A,
Venezuela
Phone:
+58-212-9063565 | e-mail:
rerangel@usb.ve
Versión
en español
| Google Scholar
| ResearchGate
Education
- Bachelor of Physics,
University of Aachen, Germany, 1980.
Bachelor Thesis: Mössbauer effect in FeMoSu
- Doctor in Physics,
University of Bayreuth, Germany, 1988.
Doctoral Thesis: On dissipative states in narrow current-carrying
superconducting filaments
- Post-Doctorate, Venezuelan Institute for Scientific Research
, Caracas, Venezuela, 1990-1993
Research Interests
- Nonlinear dynamical systems. Superconductivity far-from-equilibrium.
Transport phenomena in porous media. Disordered polymers. Transport and
magnetoconductance in disordered systems. Josephson junctions arrays in
presence of magnetic fields. Quantum decoherence models
Distinctions
Publications
- R. Rangel and F. Pobell, Mossbauer Effeckt messungen an FeMoS beim niedrigen temperaturen,
Verh. Dtsch. Phys. Ges. 372 (1979)
- R. Rangel and L. Kramer, Theorie von phasen Slupf-Zentrem in surpaleitenden filamenten,
Verh. Dtsch. Phys. Ges. 18, 910 (1983)
- L. Kramer and R. Rangel, Theory of dissipative states in quasi
one-dimensional superconductors, Journal of Low Temperature Physics
57, 389 (1984)
- R. Rangel and L. Kramer, Theory of periodically driven, current-carrying
superconducting filaments, Journal of Low Temperature Physics
68, 85 (1987)
- A. J. Ritger, H. Meissner, R. Rangel, and L. Kramer, Non-equilibrium
contributions to the electric response of dirty superconductors,
Journal of Low Temperature Physics 73, 221 (1988)
- R. Rangel and L. Kramer, Theory of periodically driven, current-carrying
superconducting filaments II. Stability limits of the homogeneous states,
periodic and chaotic phase slip states, Journal of Low Temperature
Physics 74, 163 (1989)
- L. Kramer and R. Rangel, Hysteresis in the phase-slip state of
superconducting filaments, Journal of Low Temperature Physics
75, 65 (1989)
- R. Rangel and L. E. Guerrero, Chaos beyond the onset in ac-driven
phase slip centers, Physica B 165&166, 1659 (1990)
- R. Rangel and L. E. Guerrero, Multifractality, multifractal phase
transitions and symmetry-increasing bifurcations in ac-driven phase slip
centers, Physical Review A 43, 669 (1991)
- J. F. Fernández, R. Rangel, and J. Rivero, Crossover length
from invasion percolation to diffusion limited agregation in porous media,
Physical Review Letters 67, 2958 (1991)
- R. Rangel, M. Bautista, J.-C. Lin, and P. L. Taylor, Model for
ferroelectric paraelectric phase transitions in random copolymers,
Memorias del 3er Simposio Latinoamericano de Polímeros (Universidad
Simón Bolívar, Caracas, 1992)
- M. Bautista, R. Rangel, and P. L. Taylor, Ferromagnetic-paramagnetic
phase transition in a random-bond Potts model, in: Condensed Matter
Theories, Vol. 8, edited by L. Blum and F. B. Malik, p. 649, 1992
- R. Rangel and J. Rivero, Tracing interfaces in porous media,
Physica A 191, 253 (1992)
- J.-C. Lin, P. L. Taylor, and R. Rangel, Ferromagnetic phase transition
in random Potts spin chains, Physical Review E 47,
981 (1993)
- F. P. Marín and R. Rangel, Superconductivity and disorder
in the narrow and wide band limit, Journal of Low Temperature
Physics 92, 225 (1993)
- R. Rangel, L. E. Guerrero, and A. Hasmy, Roughening transition
in a thermal sine-Gordon system, Physica B 194-196,
411 (1994)
- R. Rangel and F. P. Marín, Interplay between the Anderson
model of localization and BCS superconductivity: the finite band width
transition, Physica B 194-196, 1463 (1994)
- L. E. Guerrero and R. Rangel, Noise-induced organization in a
sine-Gordon chain, Chaos, Solitons & Fractals 6,
151 (1995)
- R. Rangel, Cooperative effects due to interpore surface tension
in unstable displacement in porous media, Chaos, Solitons &
Fractals 6, 481 (1995)
- R. Rangel and L. E. Guerrero, Anomalous roughening in a sine-Gordon
chain, Fractals 3, 533 (1995)
- E. Medina, M. Kardar, and R. Rangel, Magnetoconductance anisotropy
and interference effects in variable range hopping, Physical
Review B 53, 7663 (1996)
-
R. Rangel and L. E. Guerrero, Anomalous roughening
in a sine-Gordon chain, in: Fractal Geometry and Analysis, The Mandelbrot Festschrift, Curaçao
1995, edited by C. J. G. Evertsz, H.-O. Peitgen, and R. F. Voss (World
Scientific, Singapore, 1996) pp. 129-135
(reprint)
- R. Rangel, A. Giménez, and M. Octavio, Dynamics and chaos of current
driven two-dimensional Josephson junctions array under
F0/3
magnetic field, Physica A 261, 409 (1998)
-
R. Rangel and H. A. Guerrero, Análisis dinámico del desplazamiento
estable en medios porosos, in: Simulación con
Métodos Numéricos, Nuevas Tendencias y Aplicaciones,
edited by O. Prado, M. Rao, and M. Cerrolaza
(SVFMI, Caracas, 1998) p. AD-1
- A. Giménez and R. Rangel, Comportamiento no universal de arreglos de uniones Josephson capacitivas, in: Simulación con
Métodos Numéricos en Ingeniería y Ciencias Aplicadas,
edited by N. Troyani and M. Cerrolaza
(Editorial SVFMI, Caracas, 2000) p. EC-1
- E. Medina, E. Román, and R. Rangel, Non-ergodicity and fluctuations in mesoscopic insulators:
The replica cooperon and diffuson, Europhysics Letters 54, 647 (2001)
- R. Rangel and H. A. Guerrero, A model for stable displacement in
porous media, in: Proceedings of LACAFLUM 2001, V Latin American and
Caribbean Congress on Fluid Mechanics, edited by S. Zarea
(Universidad Simón Bolívar, Caracas, 2001) p. FPM1
- R. Rangel and E. Medina, Persistent non-ergodic fluctuations in mesoscopic insulators: The NSS
model in the unitary and symplectic ensembles,
European Physical Journal B 30 101 (2002)
- R. Rangel and E. Medina, Non-ergodic fluctuations of mesoscopic insulators with
spin-orbit coupling,
Revista Mexicana de Física 49, Supl. 3, 179 (2003)
- R. Rangel and Sergio Rojas, Efectos de la mojabilidad o adherencia en el desplazamiento inestable entre dos fluidos miscibles en un medio
poroso vía simulación Monte Carlo DLA, Ciencia 15, 77 (2007)
- R. Rangel and S. Rojas, Montecarlo DLA type simulation of non-wetting (drainage) stable displacement in porous media, Ciencia 15, 242 (2007)
- R. Rangel and S. Rojas, Montecarlo DLA-type simulations of wetting effects in fluid displacement in porous media, Computational Geosciences 13, 215 (2009)
- R. Rangel and S. Rojas, Stochastic modeling of fluid displacement in porous media and its impact in oil recovery engineering, Memorias de la ULA, number 2 (2009)
- D. Verrilli, F. P. Marín and R. Rangel, Single charge current in a normal mesoscopic region attached to superconductor leads via a coupled Poisson
nonequilibrium Green function formalism, The Scientific World Journal 2014, 721671 (2014)
- R. Rangel and M. Negruz, Multidimensional washboard ratchet potentials for frustrated two-dimensional Josephson junctions arrays on square lattices,
Journal of Physics A: Mathematical and Theoretical 49, 175101 (2016)
Tutorships
-
Jesús Rodríguez, Use of the Lanczos method in solving the problem of eigenvalues of the quartic anharmonic oscillatoro,
Bachelor Thesis, Central University of Venezuela, 1989
-
Hugo A. Guerrero, Dynamics of immiscible displacement in a porous medium, Master's Thesis,
Central University of Venezuela, 1998
-
Marcos Negruz, On the possibility of building a work operator and its importance in Statistical Physics,
Master's Thesis, Simón Bolívar University, 2011
-
David Verrilli, Calculation of self-consistent potentials in mesoscopic systems,
Doctoral Thesis, Central University of Venezuela, 2014
-
Marcos Negruz, Multidimensional potentials for Josephson junction arrays with magnetic field,
Doctoral Thesis, Simón Bolívar University, 2023
Condensed Matter & Complex Systems
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