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Phase transitions

• J.M. Pérez-Mato, I. Aramburu, M. Quilichini, S. Ivantchev, and O. Hernandez: Pseudospin-flip Phase Transitions Under Electric Field in Displacive Systems With Competing Periodicities, Physical Review B 62, 11418 (2000), pdf file.

• J. Íñiguez, S. Ivantchev, J.M. Pérez-Mato, and Albero Garcia: Devonshire-Landau free energy of BaTiO3 from first principles, Physical Review B 63, 144103 (2001), pdf file.

• J.M. Pérez-Mato, S. Ivantchev, A. Garcia, I. Etxebarria: Displacive vs. Order-Disorder in Structural Phase Transitions, Ferroelectrics, Vol. 236, 93 (2000), (also in EMF-9 -- 9th European Meeting on Ferroelectricity, Praga, July 1999).

• E. Kroumova, M.I.Aroyo, J.M. Pérez-Mato, J.I. Igartua, S. Ivantchev: Systematic Search of Displacive Ferroelectrics, Ferroelectrics, Vol. 241, 295 (2000), (also in EMF-9 -- 9th European Meeting on Ferroelectricity, Praga, July 1999).

• J.M. Perez-Mato, I. Etxebarria, S. Radescu, S. Ivantchev: The Rhodes-Wohlfarth Parameter as Assessment of the Displacive Degree in Ferroelectrics: The case of the \Phi^4 Model., The European Physical Journal B 12, 331 (1999), abstract, pdf file.

• S. Ivantchev, J.M. Perez-Mato, Alberto Garcia: Monte Carlo Simulation of Dielectric Response Near a Phase Transition: Displacive vs. Order-disorder Character, Conference on Computational Physics, Granada, Spain, September 1998 (also in ``Modelling Collective Phenomena in Complex System'', European Physical Society, vol. 22F, 233 (1998) abstract

• J. Igartua, M. Aroyo, S. Ivantchev and J.M. Perez-Mato: Pnma Crystal Structures With High Temperature Structural Phase Transitions, Seventeenth European Crystallographic Meeting, Lisbon, Portugal, August 1997.

Computational Crystallography

• E. Kroumova, M. I. Aroyo, J. M. Perez-Mato, A. Kirov, C. Capillas, S. Ivantchev, H. Wondratschek, Bilbao Crystallographic Server: useful databases and tools for phase-transition studies, accepted in Phase Transitions (2002).

• E. Kroumova, M. Aroyo, J.M. Perez-Mato, S.Ivantchev, J.M. Igartua and H.Wondratschek: PSEUDO: a program for pseudosymmetry search, J.Appl.Cryst. 34, 783 (2001).

• E. Kroumova, M. Aroyo, J.M. Perez-Mato, J.M. Igartua, S. Ivantchev: PSEUDO -- a program for pseudosymmetry search, 19th European Crystallographic Meeting, Nancy, France, August 2000.

• S. Ivantchev, E. Kroumova, G. Madariaga, J.M. Perez-Mato and M.I. Aroyo. SUBGROUPGRAPH: A Computer Program for Analysis of Group-subgroup Relations Between Space Groups. J. Appl. Cryst. 33, 1190 (2000), pdf file.

• E. Kroumova, J.M. Perez-Mato, S. Ivantchev, G. Madariaga, M.I. Aroyo, A.K. Kirov, H. Wondratschek, Further Developments of the Bilbao Crystallographic Server, XVIIIth International Union of Crystallography Congress and General Assembly, Glasgow, United Kingdom, August 1999.

• E. Kroumova, J.M. Perez-Mato, S. Ivantchev, G. Madariaga, M. Aroyo, H. Wondratschek, The Bilbao Crystallographic Server, XI Symposium del Grupo Especializado de Crystalografia, Alcala de Henares, Junio, 1999

• E. Kroumova, J.M. Perez-Mato, M.I.Aroyo S. Ivantchev, G. Madariaga and H. Wondratschek: The Bilbao Cystallographic Server: A Web Site with Crystallographic Tools Using The International Tables Eighteenth European Crystallographic Meeting, Praha, Czech Republic, August 1998 (also in ``Material Science in Chemistry, Physics and Technology'', Bulletin of Czech and Slovak Crystallographic Association, vol. 5 (1998), special issue A, 74). abstract

• J.M. Igartua, M.I.Aroyo, S.I.Ivantchev and J.M.Perez-Mato: Supergroups of space groups and their application in the predictions of structural phase transitions, International seminar ``On the predictability of Inorganic Structures'', Hunfeld, Germany, September 1997.

• S. Ivantchev, M. Aroyo, J. Igartua, G. Madariaga and J.M. Perez Mato: Computer Determination Of Supergroups Of Space Groups, Seventeenth European Crystallographic Meeting, Lisbon, Portugal, August 1997. abstract

• S. Ivantchev, J. Igartua, G. Madariaga, J.M. Perez-Mato, M.I. Aroyo. SUPERGROUPS -- A Computer Program for Determination of Supergroups of Space Groups. J. Appl. Cryst. (to appear).

Scientific computing

• S. Ivantchev: Beowulf PC Clusters with Linux, Workshop on Condensed Matter Physics: Application of Density Functional Theory and Methods of Quantum Chemistry, Laredo, Spain, June 1999. abstract, slides (in spanish).

Seminars given

• Simulaciones de Monte Carlo de la respuesta dieléctrica cerca de la transición de fase : Carácter Orden-Desorden vs Displacivo abstract (January 1999)

• Color group approach to the classification of phase transitions abstract (February 1997)

Other participations in conferences and workshops

• Euro-Par'99 (Parallel Processing), Toulouse (France), August-September 1999.

• School of Computational Physics 1999: Monte Carlo Methods in Physics, Coimbra (Portugal), September 1999.

Other seminars and courses given

• Use of Linux for Scientific Computing Projects, September 2000 (in Spanish).

• Use of Internet in Education, (part of GARATU post-graduate program), June 2000 (in Spanish).

• Clustering with Linux. Euskal8, July 2000 (in Spanish, slides).