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Theoretical studies of orbitronic and spin-orbit phenomena in heterostructures comprising van der Waals


Thesis topic details

General information

Organisation

The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.

Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.

The CEA is established in ten centers spread throughout France
  

Reference

SL-DRF-24-0460  

Direction

DRF

Thesis topic details

Category

Condensed Matter Physics, chemistry, nanosciences

Thesis topics

Theoretical studies of orbitronic and spin-orbit phenomena in heterostructures comprising van der Waals materials, metals and oxides

Contract

Thèse

Job description

The proposed PhD thesis aims at finding the best-unexplored combinations of transition metals, oxides and 2D materials (transition metal dichalcogenides, 2D magnets, graphene…) to help optimizing and providing scientific underpinnings of next generation energy efficient spintronic storage and memory devices based on emerging fields of spin-orbitronics and orbitronics. The latter is a fascinating new field of research that exploits orbital currents and their interaction with spin currents mediated by spin-orbit coupling.

Namely, using first principles calculations combined with tight-binding approach and linear response theory, we will screen the potential of aforementioned heterostructures not only for spin-orbit phenomena such as Dzyaloshinskii-Moriya interaction (DMI), perpendicular magnetic anisotropy (PMA) and spin-charge interconversion based on Rashba and Rashba-Edelstein effects (REE), but also focus on Orbital Rashba Edelstein Effect (OREE). Furthermore, the mechanisms of control of these phenomena via external stimuli (strain, external electric and magnetic fields) will be investigated as well. These studies will help finding optimal material combination to tune DMI, PMA and spin-charge interconversion efficiency to help optimizing spintronic devices making thereby a significant contribution to the development of sustainable microelectronics.

The PhD will be based on a multiscale approach including ab initio, tight-binding and atomistic approaches thus highly motivated candidate with a good background in solid state physics, condensed matter theory and numerical simulations is required. He/she will perform his/her calculations on Spintec computational cluster nodes using first-principles packages based on density functional theory (DFT) combined with other simulation codes/tools. Results obtained will be carefully analyzed with the possibility of publication in international scientific journals. Strong collaboration with labs in France (CEA/LETI, UMPhy CNRS/Thales, Aix-Marseille Univ…) and abroad (ICN2-Barcelona, PGI Forschungszentrum Jülich, Osaka University) are previewed.


University / doctoral school

Ecole Doctorale de Physique de Grenoble (EdPHYS)
Université Grenoble Alpes

Thesis topic location

Site

Grenoble

Requester

Position start date

01/10/2024

Person to be contacted by the applicant

LI Jing jing.li@cea.fr
CEA
DRT/DCOS//LSM
MINATEC Campus
F-38054 Grenoble
France

Tutor / Responsible thesis director

CHSHIEV Mairbek mair.chshiev@cea.fr
Université Grenoble Alpes
IRIG/SPINTEC
CEA - Bât 1005
17, rue des Martyrs
38054 GRENOBLE Cedex 9
0438780280

En savoir plus

https://www.cea.fr/drf/irig/Lists/StaticFiles/Mairbek-Chshiev/index.html?
https://www.spintec.fr/research/theory-simulation/
https://www.cea.fr/drf/irig/Pages/Mairbek-Chshiev.aspx