Physicist, Materials Scientist at ICMAB-CSIC, Barcelona

Researcher @ Institute for Materials Science of Barcelona (ICMAB, MULFOX). My research is focused on functional materials of interest for electronics and photonics. In particular, I have ongoing projects on:Nanophotonics and Photonic Neuromorphic engineering.

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;  gherranz@icmab.cat

PUBLONShttps://publons.com/researcher/G-2770-2014/ ORCIDhttps://orcid.org/0000-0003-4633-4367

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My CV: here.  Email: gherranz@icmab.cat

RECENT HIGHLIGHTS

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

PHYSICAL REVIEW RESEARCH 1, 032025(R) (2019),
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

Optical synapses with spike-timing-dependent plasticity

We uncover time-asymmetric photoresponses in oxide quantum wells that can mimic time-correlated plasticity as observed in biological synapses. This work can be checked out at https://doi.org/10.1021/acsaelm.9b00183, “Solid-State Synapses Modulated by Wavelength-Sensitive Temporal Correlations in Optic Sensory Inputs”

Time correlations of optical inputs may lead the way to replicate cognitive map building as observed in the brain

All you ever wanted to know about the present and future of oxide electronics, compiled in a roadmap (link to the ICMAB webpage)

Click here for more for information https://doi.org/10.1016/j.apsusc.2019.03.312 .
https://doi.org/10.1021/acsaelm.9b00127 https://doi.org/10.1021/acsaelm.9b00127
Plasticity of Persistent Photoconductance of Amorphous LaAlO3/ SrTiO3 Interfaces under Varying Illumination Conditions
https://doi.org/10.1038/s41563-019-0354-z

https://doi.org/10.1038/s41563-019-0354-z

DOI:https://doi.org/10.1103/PhysRevB.99.205421
Oxides Roadmap
https://doi.org/10.1016/j.apsusc.2019.03.312
Magnetoplasmonic couplers
opexp2

We have studied the magneto-optic responses of magnetoplasmonic couplers in a variety of platforms, including commercial digital disks. Our study reveals pathways to exploit enhanced optical functionality, of potential interest for other nanophotonic devices, such as metasurfaces.

Non-reciprocal diffraction in magnetoplasmonic gratings, https://doi.org/10.1364/OE.26.034842
Unexpected large transverse magneto-optic Kerr effect at quasi-normal incidence in magnetoplasmonic crystals, https://doi.org/10.1016/j.jmmm.2018.12.036

 

Our group has collaborated in a study published in Nature Physics about a “Giant topological Hall Effect”

The study, led by the group of Manuel Bibes, from Unité Mixte de Physique CNRS/Thales (France), published in Nature Physics on October 15, 2018, describes the discovery of a giant topological Hall effect arising from the topology of spatial distribution of spin textures.

WELCOME NEW STUDENTS (Bachelor Theses):

Xavi Domingo: Project “Neuromorphic Photonic Devices using Photoconductive Quantum Wells

Òscar Díaz: Project “Neuromorphic Photonic Devices using Photoconductive Quantum Wells

Guillem Müller: Project “Topological Photonic Metasurfaces

 

In situ imaging of ferroelastic domains under electric fields. Blai Casals et a., Phys. Rev. Lett. 120, 217601 (2018),  https://doi.org/10.1103/PhysRevLett.120.217601