Mois Ilia Aroyo

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  • Mois Ilia Aroyo, Juan Manuel Perez-MatoI, +5 authors Hans WondratschekIII
  • 2005
The Bilbao Crystallographic Server is a web site with crystallographic databases and programs available on-line at It has been operating for about six years and new applications are being added regularly. The programs available on the server do not need a local installation and can be used free of charge. The only requirement is an(More)
The Bilbao Crystallographic Server is a web site with crystallographic programs and databases freely available on-line ( The server gives access to general information related to crystallographic symmetry groups (generators, general and special positions, maximal subgroups, Brillouin zones etc.). Apart from the simple tools for(More)
Superspace symmetry has been for many years the standard approach for the analysis of non-magnetic modulated crystals because of its robust and efficient treatment of the structural constraints present in incommensurate phases. For incommensurate magnetic phases, this generalized symmetry formalism can play a similar role. In this context we review from a(More)
This paper is devoted to the study of the group-subgroup relations U < G between space groups. A procedure has been developed for the derivation of all subgroups U(j) < G which are obtained from U by a transformation with a translation (T-equivalent subgroups). All T-equivalent supergroups G(k) > U can be determined in the same way from one supergroup G >(More)
Since the discovery of topological insulators and semimetals, there has been much research into predicting and experimentally discovering distinct classes of these materials, in which the topology of electronic states leads to robust surface states and electromagnetic responses. This apparent success, however, masks a fundamental shortcoming: topological(More)
J. M. Perez-Mato,1,* P. Blaha,2 K. Schwarz,2 M. Aroyo,1 D. Orobengoa,1 I. Etxebarria,3 and Alberto García4 1Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apartado 644, E-48080 Bilbao, Spain 2Institute of Materials Chemistry, Vienna University of Technology, A-1060 Vienna, Getreidemarkt(More)
NEUTRON is a computer program for calculating the phonon extinction rules for inelastic neutron scattering experiments. Given the space group and the phonon symmetry speci®ed by the wavevector, the program examines the inelastic neutron scattering activity of the corresponding phonons for all possible types of scattering vectors. The systematic selection(More)
Type II multiferroics are magnetically ordered phases that exhibit ferroelectricity as a magnetic induced effect. We show that in single-k magnetic phases the presence in the paramagnetic phase of non-symmorphic symmetry combined with some specific type of magnetic propagation vector can be sufficient for the occurrence of this type of multiferroic(More)
Volume A of International Tables for Crystallography is the reference for space-group information. However, the content is not exhaustive because for many space groups a variety of settings may be chosen but not all of them are described in detail or even fully listed. The use of alternative settings may seem an unnecessary complication when the purpose is(More)