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), The Barcelona Institute of Science and Technology. He leads the Physics and Engineering of Nanodevices group, which focuses on quantum transport, spintronics, and thermoelectricity in materials such as graphene and topological insulators. He has pioneered the use of nonlocal devices to study the spin Hall effect, thermopiles to isolate the magnon drag in ferromagnetic materials, 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 prize, the IUPAP Young Scientist Prize and a ERC Consolidator Grant. 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, and quantum transport in particular in graphene and topological insulators. For more information see:

Selected publications

Valenzuela SO & Roche S 2019, “The phase diagram of 2D antiferromagnets“, Nature Nanotechnology, 14, 1088-1089

– Benítez LA, Sierra JF, Torres WS, Timmermans M, Costache MV & Valenzuela SO 2019 “Investigating the spin-orbit interaction in van der Waals heterostructures by means of the spin relaxation anisotropy” APL Materials, 7, 12, 120701.

– Gebeyehu ZM, Parui S, Sierra JF, Timmermans M, Esplandiu MJ, Brems S, Huyghebaert C, Garello K, Costache M & Valenzuela SO 2019, ‘Spin communication over 30 mu m long channels of chemical vapor deposited graphene on SiO2’, 2D Materials, 6, 3, 034003.

Selected research activities

Selected Invited/Plenary Talks

– Gordon Research Conference, Les Diablerets, Switzerland, July 6-7, 2019.
– Graphene Conference, Rome, Italy, June 25-28, 2019.
– 10th International Symposium on Metallic Multilayers, Madrid, Spain, June 17-21, 2019.
– 2019 Joint MMM/Intermag Conference, Washington DC, USA, January 14-18, 2019.
– Graphene Study, Obergurgl, Austria, February 3- 8, 2019.

Other Activities

– Lecturer, ESONN’19 European School on Nanoscience & Nanotechnologies (Spintronics), Grenoble, France.
– Scientific Advisory Committee Member of the European School on Magnetism (ESM).
– Co-Editor Focus Issue on Tailoring Spin-Dependent Transport in 2D Materials (2D Materials Journal;
– Coordinator of FET-PROACTIVE Project “Dissipationless topological channels for information transfer and quantum metrology”.