THEORY / SIMULATION

Overview

The group covers all aspects of fundamental physics related to spin electronics by employing a wide range of theoretical approaches including ab initio, tight-binding, free electron and diffusive methods, combined with micromagnetic simulation approaches based on solution of Landau-Lifshitz-Gilbert (LLG) equation. This allows explaining experimental observations, providing solutions for specific problems and predicting novel properties and phenomena guiding the experimental work to optimize spintronic nanostructures.

Research directions

Electronic structure and magnetic properties of materials from first principles

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Ab initio calculations based on DFT are performed in order to provide insights into fundamental mechanisms of various spintronic phenomena, and to propose novel materials and their efficient combinations with required electronic structure and magnetic properties for optimal performance of spintronic devices.

Spin-dependent transport theories

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We employ tight-binding, free electron and diffusive approaches including Green function techniques in the framework of Keldysh and Kubo formalisms, in order to describe spin and charge transport properties in magnetic nanostructures with non-collinear magnetic moments in vertical, lateral and complex geometries.

Theoretical concepts for organic and graphene spintronics

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The goal of this topic is to harvest theoretically novel spin-dependent properties (e.g. proximity effects and defect induced magnetism etc.) in organic, graphene and related 2D materials based structures in the context of emerging field of graphene spintronics.

Micromagnetic modeling

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Magnetization dynamics (macrospin and micromagnetic) simulations under applied magnetic field and/or spin polarized currents are developed to address functionalities of spintronic devices (e.g. magnetization switching, synchronization and modulation for oscillators) in various geometries. Straightforward analytical models are developed to supplement fast and efficient understanding of the magnetization dynamics.

The team

Permanent staff

CHSHIEV
Mairbek CHSHIEV
mair.chshiev@cea.fr
Web page

BUDA
Liliana PREJBEANU-BUDA
liliana.buda@cea.fr
 

GUSAKOVA
Daria GUSAKOVA
daria.gusakova@cea.fr

MARTY
Alain MARTY
alain.marty@cea.fr

Post-docs

  • Sergey NIKOLAEV (2015-2017)
  • Debapriya CHAUDHURI (2016-2018)
  • Cristian ORTIZ PAUYAC (2016-2017)
  • Nikita STRELKOV (with MRAM Group, 2016-2019)

PhD

  • Arnaud DE RIZ (2017-2020)
  • Daniel SOLIS LERMA (2016-2019)
  • Paulo COELHO (with Magnetic Sensors Group, 2014-2017)

Internships

  • Brian CHARLES (with MRAM Group, 2016)

Projects

  • ANR JCJC MATEMAC-3D (2017-2020)
  • EU FET FP7 and H2020 Flagship “Graphene” (2013-)
  • EU M-ERA.NET HEUMEM supported via ANR-DFG (2014-2017)
  • UGA Émergence et partenariat stratégique avec Western Digital (2015-2017)
  • Samsung SGMI (2014-2017)
  • ANR SOSPIN (2013-2016)
  • ANR NMGEM (2010-2015)
  • AGI14SMI15 AGIR (2014-2015)

Partners

  • Transilvania University, Brasov, Romania
  • CEA/LETI, Grenoble, France
  • INAC/PHELIQS, Grenoble, France
  • Institut Néel, Grenoble, France
  • Unité Mixte Physique CNRS/Thalès, Palaiseau, France
  • Laboratoire de Physique des Solides, Orsay, France
  • IEF, Orsay, France
  • Catalan Institute of Nanotechnology, Barcelona, Spain
  • Institut Jean Lamour, Nancy, France
  • Moscow Lomonosov State University, Moscow, Russia
  • King Abdullah University of science and technology, Thuwal, Saudi Arabia
  • University of Puerto Rico, San Juan, PR, USA
  • Western Digital Corporation, CA, USA
  • University of Bielefeld, Germany
  • University of Kaiserslautern, Germany
  • Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
  • Lawrence Berkeley National Laboratory, Berkeley, CA, USA
  • ETH, Zurich, Switzerland

Recent news

  • seminar – Topological spintronics (November 20th, 2018)
    On november 28, We have the pleasure to welcome Bertrand Dupé from INSPIRE Group, Institute of Physics, Johannes Gutenberg University Mainz, Germany. He will give us a seminar at 11:00, CEA/Spintec, Bat. 1005, room 434A ...
  • Efficient microwave amplification by heat modulation at GHz frequency in spintronics oscillators (November 13th, 2018)
    Due to the nanometer size of magnetic tunnel junctions and high interfacial resistance of ultrathin MgO tunnel barriers, temperature modulation at GHz frequency can be achieved in these devices and efficiently use to amplify microwaves ...
  • Significant Dzyaloshinskii–Moriya interaction at graphene-ferromagnet interfaces due to the Rashba effect (October 17th, 2018)
    Despite being a weak spin–orbit coupling material, graphene demonstrated to induce significant Dzyaloshinskii–Moriya interaction due to the Rashba effect leading to formation of chiral spin textures in adjacent ferromagnet (FM) at graphene/FM interfaces. First-principles calculations ...
  • Masters thesis projects for Spring 2019 (October 10th, 2018)
    You find here the list of proposals for Master-2 internships to take place during Spring 2019. In most cases, these internships are intended to be suitable for a longer-term PhD work. Interested Master-1 students are ...
  • FEOrgSpin – An ANR Project (October 01st, 2018)
    Overview FEOrgSpin project has been accepted in the framework of AAPG ANR 2018 call. This collaborative research project aims to expand current knowledge on ferroelectric control of spin polarization at different spinterfaces comprising ferromagnets (FM) and ...

Publications

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