28/07/2021

Post-doctoral researcher

This job offer has expired


  • ORGANISATION/COMPANY
    Ecole Polytechnique, PMC
  • RESEARCH FIELD
    PhysicsSolid state physics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    08/10/2021 00:00 - Europe/Athens
  • LOCATION
    France › Palaiseau
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35

OFFER DESCRIPTION

 

 

Position

 

 

 

 

Post-doctoral researcher in electronic state localization in semiconductors

 

General information

Workplace : Laboratoire de Physique de la Matière Condensée (LPMC), Ecole polytechnique, 91120 Palaiseau, FRANCE

Date of publication : 28/07/2021

Type of contract : 2 years fixed term with possible extension to 3 years.

Contract period : 2 years initially

Expected date of employment : 2022 — 2024 with a possible extension to 2025

Proportion of work (e.g full-time=100%) : 100 %

Remuneration : 2600 € to 3400 € per month depending on prior experience

Desired level of education : minimum requirement, Ph.D. in a field related to semiconductor physics

Experience required : previous experience in a research setting outside France would be an advantage, as would previous experience in the experimental study of 2D semiconductors

 

Email applications, including CV with contact details of 2 referees, list of publications and a motivation letter to either : fabian.cadiz@polytechnique.edu or alistair.rowe@polytechnique.edu

 

Assignment

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.

 

Research activities

The candidate will participate in the research activities of the EPS Group which focus on the study of the localization of charge carriers by alloy disorder, crystal defects and dielectric disorder at the atomic scale in semiconductors. Materials currently of interest include:

- nitride semiconductors and hetero-structures that constitute the active part of devices (LEDs, lasers) for lighting. In these devices, the intrinsic compositional disorder is responsible for potential fluctuations that induce carrier localization. There is growing evidence that localization effects play a major role in the device performance. High resolution photo-luminescence spectroscopy and STL microscopy should permit a study of the influence of localization on radiative and non-radiative recombination processes.

- dilute nitrides and hetero-structures where compositional disorder is accompanied by paramagnetic point defects that result in a strong spin dependence of non-radiative recombination processes, a phenomenon of interest for quantum sensing applications.

- 2D Janus alloys where a combination of intrinsic compositional disorder and a strong spin-orbit interaction should yield in-plane topological interfaces which strongly modify charge and spin transport.

 

Skills

The successful candidate will have a strong background in semiconductor physics with a Ph.D. level qualification in this or a related area. Prior experience with low temperature, optical and/or scanning probe techniques would be a significant advantage. The candidate should be able to provide proof of his/her ability to formulate a scientific project, and to publish and promote his/her research. An aptitude for work in a team environment is considered essential.

 

Work environment

LPMC is one of 22 laboratories located within Ecole polytechnique’s research centre, with expertise in the nanosciences and in the physics of disordered systems. The laboratory has its own mechanical and electronic workshops which are significant advantages in experimental physics activities like those proposed here. The candidate will have the opportunity to work with our collaborators, including those from EPFL (Switzerland), the University of Melbourne (Australia) and UC Santa Barbara (USA).

 

The laboratory is jointly run by the CNRS, France’s national scientific body, and the Ecole Polytechnique. The EPS group is looking to renew its permanent scientific faculty over the coming years, and as such a successful post-doctoral scientist should envisage a possible application for tenure with the CNRS or with Ecole Polytechnique.

 

Constraints and risks

The post-doctoral scientist will have the opportunity to present his/her results at both French and international conferences. Periods of travel within, and outside, France should therefore be envisaged.

 

Supplementary

information

For further information regarding the Condensed Matter Physics Laboratory, visit the website : https://pmc.polytechnique.fr/

More Information

Benefits

Remuneration : 2600 € to 3400 € per month depending on prior experience

Eligibility criteria

Desired level of education : minimum requirement, Ph.D. in a field related to semiconductor physics

Experience required : previous experience in a research setting outside France would be an advantage, as would previous experience in the experimental study of 2D semiconductors

Selection process

Email applications, including CV with contact details of 2 referees, list of publications and a motivation letter to either : fabian.cadiz@polytechnique.edu or alistair.rowe@polytechnique.edu

Selected candidates will be invited to and interview, and to give a seminar on their previous work.

Web site for additional job details

Offer Requirements

  • REQUIRED LANGUAGES
    FRENCH: Basic

Skills/Qualifications

The successful candidate will have a strong background in semiconductor physics with a Ph.D. level qualification in this or a related area. Prior experience with low temperature, optical and/or scanning probe techniques would be a significant advantage. The candidate should be able to provide proof of his/her ability to formulate a scientific project, and to publish and promote his/her research. An aptitude for work in a team environment is considered essential.

Work location(s)
1 position(s) available at
LPMC, Ecole Polytechnique
France
Palaiseau
91120
Route de Saclay

EURAXESS offer ID: 669039

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