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

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

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

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

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

Former members

Post-docs

  • Ali HALLAL (2015-2019)
  • Sergey NIKOLAEV (2015-2017)
  • Debapriya CHAUDHURY (2016-2018)
  • Cristian ORTIZ PAUYAC (2016-2017)
  • Hongxin YANG (2013-2015)

PhD

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

Internships

  • Libor VOJACEK (2020)
  • Brian CHARLES (with MRAM Group, 2016)

Projects

  • ANR SpinSpike (2021-2024)
  • ANR UFO (2021-2024)
  • EU H2020 FET Project Flagship “Graphene” Core 3 (2020-2023)
  • ANR MAGICVALLEY (2018-2021)
  • ANR FEOrgSPIN (2018-2021)
  • EU H2020 FET Project Flagship “Graphene” Core 2 (2018-2020)
  • ANR JCJC MATEMAC-3D (2017-2020)
  • EU H2020 ICT Project “SPICE” (2016-2020)
  • EU H2020 ICT Project “GREAT” (2016-2019)
  • ANR ELECSPIN (2016-2019)
  • EU H2020 FET Project Flagship “Graphene” Core 1 (2016-2018)
  • EU FET FP7 Project Flagship “Graphene” (2013-2016)
  • 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
  • IRIG/PHELIQS, Grenoble, France
  • Institut Néel, Grenoble, France
  • Unité Mixte Physique CNRS/Thalès, Palaiseau, France
  • Laboratoire de Physique des Solides, 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
  • NIMTE, Ningbo, China

Recent news

  • Book – Introduction to Random-Access Memory (September 01st, 2017)Book - Introduction to Random-Access Memory
    B. Dieny, R. B. Goldfarb, K.-J. Lee (Eds), IEEE Press, Wiley (2017). With chapter authorship from Spintec: L. Buda-Prejbeanu, L. Prejbeanu, B. Diény. DOI: 10.1002/9781119079415 Magnetic random-access memory (MRAM) is poised to replace traditional computer memory based on ...
  • MATEMAC3D – An ANR project (August 28th, 2017)MATEMAC3D - An ANR project
    Overview The objective of the project is to combine all key ingredients for modern Spintronics and SpinOrbitronics modeling within a novel and original non-commercial multi-physics software. These key ingredients are the appropriate spin transport equations that ...
  • Review – Perpendicular magnetic anisotropy at transition metal/oxide interfaces and applications (June 28th, 2017)Review - Perpendicular magnetic anisotropy at transition metal/oxide interfaces and applications
    B. Dieny and M. Chshiev, Rev. Mod. Phys. 89, 025008 (2017). Spin electronics is a rapidly expanding field stimulated by a strong synergy between breakthrough basic research discoveries and industrial applications in the fields of magnetic ...
  • Mairbek Chshiev elevated to Senior member of the IEEE (June 27th, 2017)Mairbek Chshiev elevated to Senior member of the IEEE
    Prof. M. Chshiev is a theoretical physicist specializing on theory of spintronic phenomena in magnetic nanostructures and electronic structure of materials for spintronics. His background comprises both condensed matter theory and computational material science approaches ...
  • Seminar : Spintronics with Ferroelectrics (June 21st, 2017)Seminar : Spintronics with Ferroelectrics
    On June 27 at 11h Prof. Evgeny Tsymbal from University of Nebraska will give a talk entitled “Spintronics with Ferroelectrics” Place : l’amphithéâtre Laurent Puech (2-D-004) in GreEN-ER building “Spintronics with Ferroelectrics” Ferroelectric materials are characterized ...

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