The Instituto de Ciencia de Materiales de Madrid (ICMM) is an institute of the Consejo Superior de Investigaciones Cientificas (CSIC) (Spanish National Research Council) founded in December 1986, that belongs to the Area of Science and Technology of Materials, one of the eight Areas in which the CSIC divides its research activities.
Our mission is to create new fundamental and applied knowledge in materials of high technological impact, their processing and their transfer to the productive sectors at local, national and European scales (the true value of materials is in their use), the training of new professionals, and the dissemination of the scientific knowledge.
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Quantum Hall ferromagnetism in multicomponent systems Angelika Knothe read more
Líquidos Iónicos en Tribología e Ingeniería de Superficies María Dolores Bermúdez Olivares read more
Reduction of Intrinsic Electron Emittance from Photocathodes Using Ordered Crystalline Surfaces
Siddharth Karkare, Jun Feng, Xumin Chen, Weishi Wan, F. Javier Palomares, T.-C. Chiang, and Howard A. Padmore
The generation of intense electron beams with low emittance is key to both the production of coherent x rays from free electron lasers, and electron pulses with large transverse coherence length used in ultrafast electron diffraction. These beams are generated today by photoemission from disordered polycrystalline surfaces. We show that the use of single crystal surfaces with appropriate electronic structures allows us to effectively utilize the physics of photoemission to generate highly directed electron emission, thus reducing the emittance of the electron beam being generated.
(a) Band structure of Ag (within the nearly free electron model) projected onto the  direction. (b)  projected band structure zoomed in near the Fermi level. The 4 green curves are free electron parabolas corresponding to various incident photon energies.