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

  • Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves (March 04th, 2021)Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves
    The spin absorption process in a ferromagnetic material depends on the spin orientation relatively to the magnetization. Using a ferromagnet to absorb the pure spin current created within a lateral spin valve, we evidence and ...
  • Controlling magnetism with voltage is shown to be more efficient using nitrogen magneto-ionics (February 12th, 2021)Controlling magnetism with voltage is shown to be more efficient using nitrogen magneto-ionics
    Voltage-driven ionic transport in magnetic materials has traditionally relied on controlled migration of oxygen ions. In this work, led by researchers at UAB (Barcelona) in collaboration with colleagues at Georgetown Univ. (D.C.), IMN-CNM-CSIC (Madrid), Spintec ...
  • Professorship position – Theory and simulation of spintronics (February 09th, 2021)Professorship position - Theory and simulation of spintronics
    SPINTEC is opening a Professorship position, with competition to take place during Spring 2021. The research scope is theory and numerical simulation, covering all aspects from fundamental to applied spintronics in the broadest sense. The ...
  • UFO – An ANR project (February 02nd, 2021)UFO – An ANR project
    UFO stands for UltraFast Opto-magneto-spintronics for Futur Nanotechnologies. UltraFast Opto-magneto-spintronics is an emerging field of research that combines the ideas and concepts of magneto-optics and opto-magnetism with spin transport phenomena, supplemented with the possibilities offered ...
  • SpinSpike – An ANR project (January 19th, 2021)SpinSpike – An ANR project
    SpinSpike stands for Spintronic Spiking Neurons. It is a 42-month-long ANR project (2021/2024). Spintronics has recently shown its promise for neuromorphic computing, but is lacking an essential ingredient of biological neural networks: spiking neurons. In this ...

Publications

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