PhD position Thse CIFRE
PhD position Thse CIFRE
Posted on :
18-04-2025
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1 Vacancy
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Monthly Salary
Not Disclosed
Salary Not Disclosed
Vacancy
1 Vacancy
Posted on :
18-04-2025
Job Description
Topic: Selective growth and optical spectroscopy of carbon nanotubes for quantum technologies between Laboratoire Charles Coulomb (L2C) Universit de Montpellier & CNRS Montpellier & C12 Quantum Electronics.
Carbon nanotubes (CNT) represent a fascinating class of onedimensional crystals characterized by a very high aspect ratio (diameter of the order of 1 nm for typical lengths of 1 to 1000 m). They feature several possible crystal structures (also known as chiralities) varying in diameter and chiral angle and described by a pair of indices (nm) called Hamada indices. In terms of electronic transport carbon nanotubes can be either metallic (if nm is a multiple of 3 or semiconducting (if nm is not a multiple of 3 and exhibit ballistic transport at room temperature.
As a consequence of their onedimensional nature their optical properties are also remarkable with absorption at precise energies characteristic of each chirality. However despite their extraordinary potential a major challenge remains: precise control of the structure of carbon nanotubes remains elusive during their growth. CNT growth is based on a catalystassisted chemical vapor deposition (CVD) process. In this process metal nanoparticles act both as growth catalysts and as templates for the formation of nanotubes with diameters close to 13 nm. Under standard conditions there is little or no structural selectivity. For quantum technologies applications another challenge arises from the formation of defects and amorphous carbon clusters along the CNT length suspected of being largely responsible for the yield reduction of functional CNTbased devices.
The recruited PhD student will develop novel CVD growth methods with high selectivity for specific types of nanotubes ultralow defect density and ultralow contamination level using local electric field and methanebased gas mixtures for the purpose of integrating them into quantum devices. To sustain these developments he/she will develop metrology protocols based on advanced optical spectroscopy techniques and highresolution transmission electron microscopy. Ultimately the results of the developments will be validated by the electronic transport signature of the grown CNTs embedded in circuits known to be sensitive to the lowest number of defects at room and cryogenic temperatures.
The PhD student will be part of a project team made up of researchers and engineers from the Charles Coulomb laboratory internationally renowned in the field of carbon nanotubes and the hightech company C12 at the forefront of the development of new quantum computers.
What we offer:
- An applied research project involving a strong partnership between an academic research laboratory based in Montpellier and an innovative company in the heart of Paris.
- Access to stateoftheart nanoscience research equipment and training in investigative methods mastered by just a few teams worldwide: growth of individual and suspended carbon nanotubes resonance Raman spectroscopy resonant Rayleigh scattering spectroscopy cleanroom for nanofabrication cryostats for electronic transport measurement.
- Participation in international conferences and the international summer school we organize every two years on the optical properties of lowdimensional systems.
- Our network of national and international collaborations with both academic and industrial partners.
- Optimal working conditions in fully renovated research buildings at the heart of the University of Montpelliers science campus.
- At the end of the PhD significant recruitment opportunities over the next ten years both in the academic sector (due to numerous retirements within universities) and in the private sector (with the industrial development of carbon nanotubes).
- Contract type: CIFRE thesis
- Duration: 3 years
Sought profile:
- Masters degree or engineering diploma in Chemistry Physics or Materials Science by September 30 2025
- Strong motivation for experimental research work
- Strong motivation for a research career in academia or industry
Administrative details
- Thesis director isPr Vincent Jourdain (Laboratoire Charles Coulomb Montpellier)Email: Profile: you would like to apply for this position apply directly here or send your application (CV motivation letter contact details of 13 references) before May 15 2025 to the following addresses: or
- C12 Quantum Electronics
- Laboratoire Charles Coulomb
- University of Montpellier
Employment Type
Full Time
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