Fabian Cadiz

Assistant professor, Ecole polytechnique


Assistant Professor at Ecole Polytechnique

Faculty member of the Physics Department of Ecole Polytechnique & IP Paris

Researcher at PMC in the Electrons Photons Surfaces Group: EPS group website

PI of the SpinCAT project (ANR Young researcher Grant).

  • Biography : Fabian Cadiz is Assistant Professor at Ecole Polytechnique (IP Paris). He carried out his Ph.D. at the Laboratory of Condensed Matter Physics (Ecole Polytechnique/CNRS). He then conducted a two year post-doc at LPCNO (Paul Sabatier University/INSA/CNRS). Since 2017, he has been building up a new research activity at IPP that explores the physics of novel 2D materials. To develop this new activity, Fabian Cadiz was awarded a Young Researcher Grant from the French National Research Agency. His work has led to major contributions in the fields of Spin physics in semiconductors, with the publication of articles in the scientific journals Nature communications, Nano Letters, and Physical Review Letters and was awarded the École Polytechnique Thesis Award (2016).

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  • Experience

  • Assistant Professor - Physics department, Ecole Polytechnique

    Sept 2017 - Present

    Researcher at the Laboratory of Condensed Matter Physics (Ecole Polytechnique & CNRS).

  • Post doctoral researcher - LPCNO, Toulouse

    Oct 2015 - July 2017

    Optical and electrical spin injection and detection in ferromagnetic/semiconductor hybrid systems.

    Optical properties of transition metal dichalcogenide monolayers.

  • PhD in Physics - Ecole Polytechnique

    Sept 2012 - Aug 2015

    Subject: Spin dependent transport in semiconductors.

    Laboratory of Condensed Matter Physics.

    Gaspard Monge international scolarship.

    Ecole Polytechnique Thesis Award.

  • Education

  • Master in applied physics - Ecole Polytechnique, France

    2011 - 2012

    Highest GPA of the Nanophysics track. Funded by Chaire St Gobain & French government. Internship at Laboratoire Charles Fabry, Institut d'Optique, France.

  • Master in fundamental physics - PUC, Chile

    2009 - 2011

    Master thesis: Renormalization group effects on neutrino masses in partial split supersymmetry.

    Conicyt scolarship for master studies.

  • Electrical engineer - PUC, Chile

    2005 - 2011

    Third year of "Ingénieur polytechnicien" program (X2007).

    Foundation of Ecole Polytechnique fellowship (2007).

    Excellence fellowship, PUC Chile (2005).


Fabian teaches in the Physics Department of Ecole Polytechnique, with a 192 hour / year teaching service. Previously, he had taught at INSA Toulouse (Engineering school) and at PUC, Chile.

Engineering program

PHY430 Advanced Quantum Mechanics (2020-present).

PHY361 Quantum mechanics (2019-present).

PHY47XA Semiconductor physics Lab (2019-present).

PHY47XA Laser-generated plasmas Lab (2017-2019).

PHY301 Formation préparatoire, Physique (2017-2020).

Bachelor program

PHY104 Electromagnetism and Light (2018-present).

PHY106 Beginner's Lab II (2017-2020).

PHY203 Advanced Lab I (Teaching coordinator) (2018-2020).

PHY207 Advanced Lab II (Teaching coordinator) (2018-2020).

PHY302 Advanced Lab III (2019).


Electromagnetism & Light (2019). Ecole Polytechnique, Palaiseau, France.

Classical Mechanics (2013). Pontificia Universidad Catolica, Chile.

Research activities

In 2017 I have brought a new research activity to Ecole Polytechnique: the study of the fascinating optical properties of excitons in novel 2D semiconductors such as MoS2, MoSe2,WSe2, and WS2. Soon after joining the PMC lab, I have installed a setup to mechanically exfoliate van der Waals crystals and determiniscally transfer single layers into any kind of substrate and in a well controlled atmosphere. To obtain high quality samples, we encapsulate 2D layers with very thin hexagonal boron nitride flakes. More recently, we have managed to fabricate charge tunable devices with graphene flakes as electrical contacts. I have constructed a hyperspectral microscopy experiment that works with polarized light at low temperatures. By exploiting the optical selection rules, this experiment allows to explore charge, spin and valley dynamics in a variety of semiconductors at the micron scale. This new activity has received financial support through the ANR Grant SpinCAT (2018-2022), and currently two PhD candidates are working under my supervision (Sangjun Park 2018-2022 and Caroline Boule 2020-2023). Below I present a list of selected works throughout my research career. For a full list of publications, click here








Supervision of PhD theses

Open positions

Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, France

Post-doctoral researcher in electronic state localization in semiconductors

General informations:

- 2 years contract (possible extension to 3 years)

- Phd in a field related to semiconductor physics required

- The candidate will join the Electrons-Photons-Surfaces (EPS) group of the LPMC and will concentrate on the physics of charge and exciton localization induced by compositional and environmental disorder in novel 2D semiconductor alloys and their heterostructures. The candidate will have the opportunity to fabricate van der Waals heterostructures on a variety of substrates, and to contribute to the installation of a new cryogen-free optical cryostat to be used with a recently-modernized, double monochromator. It is envisaged that the candidate will use this approach, in parallel with a novel technique known as scanning tunnelling luminescence microscopy, to probe localized quasi-particle states down to the nanoscale. One envisaged research direction is to use the ability to create layered structures of different thicknesses to study the evolution of state localization when passing from 2D to 3D. The position is financed through the Simons Foundation (Localization of Waves) and the candidate will interact regularly with the members of this consortium. The candidate will also have the latitude to develop their own research activities and as such, the position would suite someone interested in subsequently applying for a permanent position, either with the CNRS or at Ecole Polytechnique.

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