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Grupo Astrofísica


The Courtyard of Science 2017

Program of the Courtyard of Science 2017.


V International Course Science takes the floor: the social problems of the pseudosciences in time of information

from 6 to 8 of September 2017.
This course can be recognize by 2 credits of departmental or non-departmental elective courses or by a 20 hour certificate of the ICE (Institute of Sciences of the Education) with a cost of 30 €. Already it has opened the term of prescription and enrolment.




Colloquia of Physics. (Science of today)

Ninth edition of Physics Colloquium with "Seismic Risk. Prediction or Prevention. Perspective from the Physics of the Earth" given by the University of Alicante's professor, Sergio Molina Palacios.

Professor Molina initiated a line of investigation in Seismic Dangerousness in his doctoral thesis that was the starting point to establish a collaboration between the UA and the research center NORSAR (Kjeller, Norway). This collaboration allowed him develop the tool of free code SELENA, widely used to world-wide level, for the calculation of the seismic risk.

This colloquium is opened to all public and especially to the students of first course of Physics of the UA.

The colloquium will take place in classroom 3, phase 2, of the Faculty of Science, University of Alicante, wednesday the 17 of  March, at 11:30 am. The place of the event will be communicated later.

Nueva publicación

Graphene flakes obtained by local electro-exfoliation of graphite with a STM tip!divAbstract

C. Rubio-Verdú, G. Sáenz-Arce, J. Martinez-Asencio,, D. C. Milan, M. Moaied, J. J. Palacios, M. J. Caturla  and C. Untiedt.






Given by: Vladimir Gasparian

Date and hour: Thursday, 23 March 2017 to the 12:30 hours

Place: Polyvalent Room of the Department of Applied Physics, Faculty of Sciences, Phase II


In many experimental situations the diagonal and non-diagonal elements of dielectric permittivity tensor vary with the time originating time-dependent Faraday rotation (TDFR).

TDFR has been used, based on a left (right) circularly polarized pump-probe technique,for investigation of spin relaxation processes of a system using a continuous laser _eld [1] or laser pulse as linear cases [2], or to study the e_ect of electron phonon coupling in metals undergoing thermal transport [3]. In this technique a pump pulse is used to excite the sample, changing the optical properties while a second time-delayed probe pulse measures the change.

So far primary attention has been focused on systems with time dependent diagonal element (refractive index), not giving much attention to the non-diagonal dielectric permittivity term (gyration vector) that can also vary with time. In the present presentation we will discuss a theoretical approach for investigating TDFR in a magnetoactive medium with time dependent dielectric permittivity tensor (diagonal and non-diagonal elements).

We will consider continuous and pulse incident laser _eld cases and will show that in a continuous case Faraday rotation angle increases with time. The latter, in both time dependent diagonal and non-diagonal element cases, shows an increase with periodic oscillations as either positive (time-dependent dielectric permittivity case) or negative (time dependent gyration vector case) and follows a general pattern. Ultrashort pulse can scan the time dependent dielectric permittivity through the Faraday rotation angle and can be used to interpret some

experimental data of spin-relaxation processes in EuO thin _lms [2].

[1] F. Liu et al, Phys. Rev. Letters, 108, 257401, (2012).

[2] D. Giovanni et al, Nano Letters, 15(3), 15531558, (2015).

[3] S. D. Brorson et al, Phys. Rev. Letters, 64, 2172, (1990).

Colloquia of Physics. (Science of today)

Eighth edition of the colloquia of Physics with "OBSERVATIONAL PROOFS OF THE MODEL OF THE BIG EXPLOSION (BIG BANG) " given by the Dr. Alberto Fernandez Soto, Scientific Headline of the CSIC in the Institute of Physics of Cantabria (CSIC-UC) and co-autor of the book "Origins: The universe, the life, the humans".

This colloquium this opened to the public in general and especially to the students of first course of Physics of the UA.

The colloquium will take place the Friday 17 March, to the 12:00 hours, in the Living room of acts of the Faculty of Science of the University of Alicante.



Department of Applied Physics

Facultad de Ciencias, Fase II - Planta 2ª
Universidad de Alicante
Carretera de San Vicente del Raspeig s/n
03690 San Vicente del Raspeig
Alicante (Spain)

Tel: (+34) 96 590 3540

Fax: (+34) 96 590 9726

For further information:, and for enquiries on this web server:

Carretera San Vicente del Raspeig s/n - 03690 San Vicente del Raspeig - Alicante - Tel. 96 590 3400 - Fax 96 590 3464