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Accueil du site > LPCNO > Recrutement > Post-doc > Post-doc positions in position in optical spectroscopy and transport measurements in paramagnetic defects in dilute nitrides semiconductors

Post-doc positions in position in optical spectroscopy and transport measurements in paramagnetic defects in dilute nitrides semiconductors

Post-doc position in optical spectroscopy and transport measurements of paramagnetic defects in dilute nitrides semiconductors

The quantum optoelectronics group in Toulouse (France) is looking to fill a postdoc position on optical spectroscopy and transport measurements in dilute nitrides GaAsN semiconductors starting in April/Mai 2018.
Ga defects in dilute nitride GaAs give rise to paramagnetic centers whose well isolated and stable electron and nuclear spin states can be addressed collectively and detected not only by optical but also electrical means. This addressing relies on a giant spin dependent recombination of conduction electrons to the paramagnetic center, which is very effective even at room temperature and can act as an efficient ultrafast spin filter. In this postdoctoral project, by taking advantage of different facets of the same giant spin dependent recombination phenomenon, we aim at tackling the double challenge of : (i) improving the all-optical readout scheme of the of hyperfine-coupled electron-nuclear spins without the need of any electron resonance technique ; (ii) Proposing a scheme to electrically address the defects and investigating the feasibility of an electrical detector of circular polarization state of light.

Concerning the background of suitable candidates, experience in one or all of the following would be an advantage :

  • (i) Experience on (ultrafast) optical spectroscopy on semiconductors at cryogenic temperatures or optically active defects.
  • (ii) Experience in FIB or other ion implantation techniques.

The Toulouse group offers state-of-the art optical spectroscopy facilities and a stimulating, friendly working environment. You will join a well-equipped and highly motivated team of 8 permanent researchers and several PhD students and postdocs. Being a team player is very important for this experimental work. The candidate will also be offered the possibility to contribute to the other ongoing research activities of the groups (Materials for telecoms, Bismide materials, 2D materials, single quantum dots, …)

The post-doc position is for 12 months renewable for one additional year if the candidate wishes to get involved in a complementary work, funded in the framework of a collaboration with industrial partners, and dedicated to the improvement of semiconductor optical amplifier performances.
Please send us your CV with contact details of at least 2 referees. For additional information on the project and the working environment, feel free to contact :
Andrea Balocchi (andrea.balocchi@insa-toulouse.fr)
Hélène Carrère (carrere@insa-toulouse.fr)
Further details :
-https://arxiv.org/abs/1702.04129
- PRB 95, 195204 (2017)
- APL 103, 052403 (2013)
- Nature Materials, 8, 198 (2009)