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Seminario del Departamento de Física de la Materia Condensada: “Electromigration, from pain to gain”.- Viernes 24 de mayo

El 24 de mayo se celebrará la última sesión del ciclo de 2024 de los Seminarios del Departamento de Física de la Materia Condensada de la Universidad de Zaragoza, con Alejandro V. Silhanek (Université de Liège), que ofrecerá la conferencia titulada: Electromigration, from pain to gain”.

La sesión tendrá lugar a las 12:30 horas en la Sala de Grados de la Facultad de Ciencias de la Universidad de Zaragoza.

Resumen de la conferencia (en inglés):   Electromigration is the displacement of ions in a metal resulting from the momentum transfer between conducting electrons and diffusing atoms. Although already investigated more than 100 years ago, it became a major problem only when the severe conditions necessary for operation of integrated circuits (IC) made it apparent in the late 1960s. Although it remains a major concern the negative perception of electromigration has progressively changed during the last decades. Nowadays, controlled electromigration can be regarded as a very promising tool for modifying the physical properties of micro and nanoscale materials with single atom resolution and with a high degree of flexibility. In this lecture, I will present a comprehensive overview of the evolution of electromigration from a device failure mechanism to a nanofabrication tool.

I will briefly discuss the physical mechanisms and some material aspects, propose a method to efficiently and safely control its rate, and finish with some recent applications to the study of superconducting circuitry. The proposed postprocessing technique of controlled electromigration is particularly appealing in view of its simplicity, robustness and applicability to a large diversity of materials.

Resumen de su currículo (en inglés): Alejandro Silhanek is head of the group Experimental Physics of Nanostructured Materials at the University of Liège, Belgium. He is Professor at the Physics Department since 2011. He has obtained his Ph.D. at the Instituto Balseiro (Bariloche, Argentina) in 2001, followed by two postdoctoral experiences at the KULeuven (Belgium) and Los Alamos National Laboratory (USA). He has more than 200 scientific publications in a large diversity of domains in mesoscopic physics and nanoscience, including magnetism, superconductivity, metamaterials, and quantum transport. More information on our website http://www.mate.ulg.ac.be/.

El ciclo de Seminarios del Departamento de Física de la Materia Condensada cuenta con la colaboración del Instituto de Nanociencia y Materiales de Aragón, INMA, instituto mixto del CSIC y la Universidad de Zaragoza, y la Facultad de Ciencias de la Universidad de Zaragoza.

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