MICROWAVE DEVICES

Overview

Microwave oscillations of the magnetization around its equilibrium are the natural dynamical response to external perturbations (e.g. thermal fluctuations, microwave fields). This offers the promise for a new class of microwave devices, benefiting from their small foot-print, their ability to be controlled electrically, and their integrability with CMOS technology. Identified devices include local oscillators, microwave filters, detectors, and non-reciprocal devices. Understanding the dynamics of these nano-objects, applying general concepts of microwave oscillator techniques and defining from this novel microwave applications is the major aim of this activity.

Research directions

Spin Transfer Torque Oscillators

particles
We are realizing and studying microwave emitting sources based on the magnetization precession, mainly in the shape of nanopillars made out of magnetic heterostrucures. This offer the possibility to build new devices for telecommunication in the Ghz range.

Magnonics

particles
Magnons are the quasi-particles associated to the collective excitations of spins. Mode engineering and transfer of angular momentum by magnonics current are some of our key ongoing research activities.

The team

Former members

Post-docs

  • Sylvain MOULIS
  • Artem LITVINENKO
  • Pankaj ZETHI
  • Alumni : A. Ruiz Calafora, K. Jaimes Merazzo, K. Garcia Hernandez, C. Murapaka

PhD

  • Nicolas Thiery
  • Alumni : Kyota Watanabe (GP-Spin program), Matthieu Favre, Jérôme Hem, Anike Purbawati

Visitors

  • W.E. Bailey – Columbia University (2009, 2010, 2011, 2012), A. N. Slavin – Oakland University (2012, 2013), V. Naletov (2016)

Projects

  • ANR SPINNET
  • ANR MAESTRO
  • EU GREAT
  • EU MOSAIC
  • ANR SPINOVA

Partners

  • Leti (Grenoble)
  • Unité Mixte CNRS/Thale (Palaiseau),
  • Service de l’etat condense-CEA (Saclay)
  • Univ. Munster (Germany)
  • INL (Portugal)
  • University of Münster (Germany)
  • Oakland University (United States of America)

Recent news

  • Spin orbit effects (July 24th, 2015)
    YIG delay lines: Description: Microwave wireless telecommunications are the backbone of the information age. They enable the exchange of data between connected objects. The Internet of Things is expected to connect as much as 80 billion objects ...
  • WHITE PAPERS / MAJOR PUBLICATIONS (July 02nd, 2015)
    WHITE PAPERS / MAJOR PUBLICATIONS
  • IMPEDANCE MATCHING (July 02nd, 2015)
    Increasing Output Power by impedance matching Description Impedance mismatch between the STNO device (for MTJs 100 – 1000 Ohm) and standard RF circuitry (at 50 Ohm) leads to a reduction of the output power of 10 dB. ...
  • STNO DYNAMICS (July 02nd, 2015)
    Spin torque driven excitation spectra and microwave performances for different STNO configurations Description The dynamic response under spin transfer torque depends on the magnetization configuration of the polarizer and the free layer. At SPINTEC we have focused ...
  • SPIN PUMPING (July 02nd, 2015)
    Injection and detection of pure spin currents using ferromagnetic resonance Description Damping enhancement in ferromagnetic resonance to study spin current injection from FM1 and spin absorption in FM2 or NM in magnetic heterostructures FM1/Cu/FM2 or FM1/Cu/NM. Partners Prof. W. ...

Publications

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