Light-Matter Interactions and Quantum Transport, Institute for Materials Science of Barcelona (ICMAB, MULFOX).

I investigate transition metal oxides to find pathways to fundamental discoveries and applications in Condensed Matter Physics and Photonics. These materials are distinguished by their rich variety of physical properties, which come from a delicate balance of different energy scales. This makes them particularly susceptible to external perturbations, inducing transitions among different electronic phases (magnetic, ferroelectric or superconductive).

I am currently working on these topics: (i) Quantum Transport in Oxides, (ii) Light-Matter Interactions in Quantum Materials (iii) Topological Photonics

Laboratory of Multifunctional Oxides and Complex Structures, Institut de Ciència de Materials de Barcelona ICMAB-CSIC, Campus de la UAB, E-08193 Bellaterra, Catalonia, Phone: +34 93 580 18 53 (ext. 357) Fax: +34 93 580 57 29;


Google Scholar

My CV: here.  Email:


Jahn-Teller states mixed by spin-orbit coupling in an electromagnetic field

Alejandro S. Miñarro, Gervasi Herranz

Phys. Rev. B 106, 165108 – (2022)

Electrical characterization and extraction of activation energies of the defect states in the LaAlO3/SrTiO3 heterostructure

 Yoann LechauxYu Chen Albert Minj Florencio Sánchez Gervasi Herranz Laurence Méchin, and  Bruno Guillet

Dynamic control of octahedral rotation in perovskites by defect engineering

Jiahui Jia, Xu He, Arsalan Akhtar, Gervasi Herranz, and Miguel Pruneda

Phys. Rev. B 105, 224112 – (2022)

A schematic of the proposed mechanism to control octahedral tilts. Small red circles represent the anions at the corners of the octahedra with the B cation in the center (blue circle).

Photoinduced Persistent Electron Accumulation and Depletion
in LaAlO3/SrTiO3 Quantum Wells

Yu Chen, Yoann Lechaux , Blai Casals , Bruno Guillet, Albert Minj
Jaume Gázquez, Laurence Méchin, and Gervasi Herranz

PHYSICAL REVIEW LETTERS 124, 246804 (2020)

Electric-field-induced avalanches and glassiness of mobile ferroelastic
twin domains in cryogenic SrTiO3

Blai Casals, Sebastiaan van Dijken, Gervasi Herranz, and Ekhard K. H. Salje

Yu Chen, PhD defense: “Artificial Synapses based on the Photoconductance of LaAlO3/SrTiO3 QuantumWells”, 14th November

Optical synapses with spike-timing-dependent plasticity
Plasticity of Persistent Photoconductance of Amorphous LaAlO3/ SrTiO3 Interfaces under Varying Illumination Conditions