Dr. Fernando Rodríguez Professor (Catedrático), Condensed Matter Physics Department of Earth Sciences and Condensed Matter Physics Research Group 'High Pressure and Spectroscopy'  UNIVERSITY OF CANTABRIA Phone:  (+34) - 942 - 20 15 14  Fax:  (+34) - 942 - 20 14 02  e-mail:  fernando.rodriguez@unican.es Address:  DCITIMAC, Facultad de Ciencias Universidad de Cantabria Avda. de Los Castros s/n 39005 Santander, SPAIN

---

University Studies: Physics

Born in Llanes(Asturias, Spain) in 1955 and grew up in Cabezón de la Sal (Cantabria, Spain). Obtained a Ph.D. in Physics at the University of Cantabria in 1984 and was awarded the Premio Extraordinario de Doctorado in 1985. A DGICYT Senior Postdoctoral Fellowship initiated collaboration in High Pressure Research and High Resolution Optical Spectroscopy at the University of Bern in Switzerland (1989 and 1991). He was a visiting scientist in the Solid State Group at King's College London (1995-1996) to investigate impurity defects in Silicon using FT spectroscopy. User scientist in Large facilities (ILL and ESRF in Grenoble, and LURE and LLB in Orsay) and participated in different research projects. He has supervised several Thesis and a Final year projects in the field of Optical Properties of materials and High Pressure research. He collaborates with different research groups and leads the High Pressure & Spectroscopy Group. Since 1998 is involved in the European High Pressure Research Group (EHPRG) as Committee Member (1998-2000), Secretary (2000-2003) and Chairman (2003-2006). Affiliate Member of the Physics Department at Colorado State University since 2005. Head of the Earth Science and Condensed Matter Physics (DCITIMAC) of the University of Cantabria (2004-08).

Specialities and research areas:

His main research field is the optical properties of materials, searching for correlations with their structural and magnetic properties. Preferred interest is focused in Jahn-Teller systems, impurities, defects and localised centers formed in insulators and semiconductors. Expertise in High Resolution Optical Spectroscopy and High Pressure techniques.

Present reasearch topics:

· Optical properties of materials under pressure. High pressure research. Microspectrometers for DAC.

· Charge Transfer and Crystal Field spectroscopy of transition metal ions. Thermochromic and piezochromic properties.

· Correlation studies between optical, magnetic and structural properties in Jahn-Teller systems of Cu(II), Ti(III), Ni(III), Co(III) and Mn(III).

· Photoluminescence studies of materials containing Mn(II) and Cr(III). Local structure characterisation from EXAFS and Optical spectroscopy.

· Study of defect centers in Silicon through optical spectroscopy. Center formation and passivation by Li.

High resolution FT spectroscopy, Uniaxial stress, Zeeman and Isotopic studies.

· Solar concentrators for photovoltaic improvement.

---

Recent relevant publications:                    (click here for a complete list of publications)

"Polarized electronic spectra of the (CH₃NH₃)₂Cd_xMn_1-xCl4 (x = 0-1) perovskite layer doped with Cu²⁺: Study of the Cl^- to Cu²⁺ charge transfer intensity enhancement along the series"
J. Phys. Chem. Solids 57, 571-587 (1996) by R. Valiente and F. Rodríguez  

"Synthesis, structure and polarized optical spectroscopy of two new fluoromanganese(III) complexes"
J. Chem. Soc., Dalton Transactions 22, 4335-4340 (1997) by P. Núñez, C. Elias, J. Fuentes, X. Solans, A. Tressaud, MC. Marco de Lucas and F. Rodríguez 

"Effects of chemical pressure on the charge-transfer spectra of the CuX₄^2-complexes formed in Cu²⁺-doped A₂MX₄ (M=Zn, Mn, Cd, Hg; X=Cl, Br)
J. Phys.: Cond. Matter 10, 9525-9534  (1998) by R. Valiente and F. Rodríguez

"Electron-phonon coupling in charge-transfer and crystal-field states of Jahn-Teller CuCl₆^4- systems"
Phys. Rev. B 60, 9423-9429 (1999) by R. Valiente and F. Rodríguez

"Study of the photoluminescent oxygen-related center at 1096.9 meV in neutron-irradiated CZ-Si. Centre formation and structure".
Radiation Effects & Defects in Solids 149, 141-148 (1999) by F. Rodríguez, G. Davies and E.C. Lightowlers

"Double-excitation transitions in the perovskite NH₄MnCl₃ studied by pressure techniques"
Phys. Rev. B 60, 10598 (1999) by F. Rodríguez, D. Hernández and H.U. Güdel

"Optical study of the piezochromic transition in CuMoO₄ by pressure spectroscopy"
Phys. Rev. B 61, 16497 (2000) by F. Rodríguez, D. Hernández, J. Garcia-Jaca, H. Ehrenberg and H. Weitzel

"Spectroscopic study and structural characterization of a Li-related photoluminescence center in neutron irradiated Si"
Phys. Rev. B 62, 6180 (2000) by  F. Rodríguez, G. Davies and E.C. Lightowlers

"Photoluminescence enhancement of Ca_1-xSr_xF₂: Mn²⁺ under pressure"
Radiation Effects & Defects in Solids 154, 287-293 (2002) by E. Gutiérrez, F. Rodríguez, M. Moreno and R. Alacalá

"Optical Spectroscopy of Ti³⁺: Al₂O₃ single crystal under hydrostatic pressure. The influence of the Jahn-Teller coupling".
J. Phys.: Cond. Matter 14, 447-459 (2002) by S. García-Revilla, F. Rodríguez, R. Valiente, and M. Pollnau

"Pressure-induced photoluminescence in Mn²⁺-doped SrF₂ and BaF₂ fluorites".
Phys. Rev. B 67, 012101-4 (2003) by I. Hernández and F. Rodríguez

"Intrinsic and extrinsic photoluminescence in the NH₄MnCl₃ cubic perovskite: a spectroscopic study"
J. Phys.: Condens. Matter 15, 2183–2195 (2003) by I. Hernández and F. Rodríguez

"Pressure effects on NaMnF₄: Structural correlations and Jahn-Teller effect from crystal spectroscopy"
Phys. Rev. B 67, 205101-8 (2003) byF. Aguado, F. Rodríguez and P. Nuñez

"Correlations between structure and optical properties in Jahn–Teller Mn³⁺ fluorides: a study of TlMnF₄ and NaMnF₄ under pressure"
J. Chem. Phys. 118, 10867-75 (2003) by F. Rodríguez and F. Aguado

"Photoluminescence and radiationless processes in Mn²⁺-doped Ca_1-xSr_xF₂ fluorites as a function of pressure and temperature.

A structural correlation study"
J. Chem. Phys. 119, 8686-94 (2003) by F. Rodríguez, I. Hernández, M. Moreno and R. Alcalá

Complete list of publications: