Sergio O. Valenzuela

Sergio O. Valenzuela

Institut Català de Nanociència i Nanotecnologia

Engineering Sciences

Sergio O. Valenzuela is an ICREA Prof. at the Catalan Institute of Nanoscience and Nanotechnology (ICN2). He leads the Physics and Engineering of Nanodevices group, which focuses on quantum transport, spintronics and thermoelectricity in quantum and topological materials. He has pioneered nonlocal devices to study the spin Hall effect, thermopiles to isolate the magnon drag in ferromagnets and implemented novel qubit control and spectroscopy methods. Prof. Valenzuela received a PhD in Physics at the University of Buenos Aires and held research positions at Harvard University and MIT. He is recipient of the Giambiagi and IUPAP Young Scientist Prizes, a ERC Consolidator Grant and is a 2022 elected member of the Academia Europaea and 2022 APS Fellow. He is also Principal Investigator of the Graphene Flagship and Grantor of the ICN2 “Severo Ochoa” Centre of Excellence Project. 

Research interests

In recent years, electronic devices have been scaled down to nanoscale sizes where quantum effects begin to interfere with their functioning. Materials and devices in such scales often present unexpected and counterintuitive physical properties. Prof. Valenzuela's Group focus is the development of novel devices, which are designed to gain insight of specific physical properties of the system components, relevant both for fundamental reasons and applications at the nanoscale. The current research interests of the group span spintronics, spin caloritronics, quantum transport and manipulation, using 2D materials and topological insulators, and quantum metrology. For more information see:

Selected publications

- Jamet M, Vaz DC, Sierra JF, Světlík J, Valenzuela SO, Dlubak B, Seneor P, Bonell F & Guillet T 2023, Two-Dimensional Spintronics, Beyond-CMOS: State of the Art and Trends.
- Figueroa AI, Lv H, Herfort J, Czubak D, Zallo E, Guillemard C, Valvidares M, Rubio-Zuazo J, López-Sánchez J, Valenzuela SO, Hanke M, Ramsteiner M & Lopes JMJ 2023, ‘Microscopic magnetic properties of two-dimensional magnetic FexGeTe2 films on graphene‘, IEEE Int Mag Conf,  1-2.

Selected research activities

Selected Invited Talks and Lectures
– 2D Materials Day, National Graphene Institute, the University of Manchester, June 26, 2023, Manchester, UK.
– Paul Drude Institute, December 15, 2023, Berlin Germany.
– MRS-Materials Research Society Fall Meeting, November 26-December 1, Boston, USA.
– Lecturer, ESONN’23 European School on Nanoscience & Nanotechnologies (Spintronics), September 2023, Grenoble, France.
Other Activities
– Focus Topic Leading Organizer “Spin-Dependent Phenomena in Semiconductors, including 2D Materials and Topological Systems”, APS March Meeting, March 5-10, Las Vegas, US.
– Co-organizer and co-chair “Topological Matter Conference” March 28-31, Athens, Greece.
– Coordinator of FET-PROACTIVE Project “Dissipationless topological channels for information transfer and quantum metrology”.
– Editorial Board in npj Spintronics (Nature Publishing Group) and in Advanced Physics Research (Wiley).