603. WE-Heraeus-Seaminar: Magnonics – Spin Waves Connecting Charges, Spins and Photons

Magnonics – Spin Waves Connecting Charges, Spins and Photons

Seminar
Date:
We, 06.01.2016 08:45  –   Fr, 08.01.2016 14:00
Sprecher:
Helmut Schultheiß (HZ Dresden-Rossend), Andrii Chumak (TU Kaiserslautern)
Adresse:
Physikzentrum Bad Honnef
Hauptstr. 5, 53604 Bad Honnef, Germany

Language:
English
Event partner:
Wilhelm und Else Heraeus-Stiftung
Contact person:
Helmut Schultheiss,

Description

603. Wilhelm und Else Heraeus-SeminarWEH Logo
Magnonics
Spin Waves Connecting Charges, Spins and Photons
January 6-8, 2016, Physikzentrum Bad Honnef

generously funded by the Wilhelm und Else Heraeus-Stiftung

Magnons are the collective excitations of a ferromagnet's electrons and can be understood as the precession of the electrons' spins. The collective nature of magnons is established by the short-range exchange interaction as well as the non-local magnetic dipolar interaction, resulting in coherence of SWs from mesoscopic to even macroscopic length scales. Consequently, magnons are “charge current free” and, therefore, less subject to dissipation caused by scattering with impurities on the atomic level. This renders magnons a promising alternative to electric (spin) currents for the transport of spin information - one of the grand challenges of condensed matter physics.

The possibilities of magnons being a new means of information carriers stimulated the emerging research field called “magnonics”. Its name - inspired by the terms “spintronics” and “photonics” - indicates the main driving force behind magnonics: exploiting magnons for information processing to supersede electronics. For frequencies ranging from Gigahertz toTerahertz, the magnon wavelengths can be as small as only a few nanometers, orders of magnitude smaller compared to electromagnetic waves. Also, their transport properties exhibit a strong dependence on the magnetization configuration that can be non-volatile and still reconfigurable on a sub-nanosecond timescale.

Even though magnonics in itself still poses many interesting questions that are worth investigating, recent developments in spintronics as well as photonics show the potential of magnonics to become a powerful “bridge technology” closing the gap on the time- and length-scale between charge and photon physics.

The key intention of this 603rd WE-Heraeus Seminar is to eludicate how magnons can connect charge and photon driven magnetization dynamics.

The number of participants is limited to about 80, so that registration as soon as possible is advisable.


Invited Speakers:
Attila Kakay, Helmholtz-Zentrum Dresden-Rossendorf
Britta Leven, Technische Universität Kaiserslautern
Daniel Loss, University of Basel, Switzerland
Dirk Grundler, Ecole polytechnique fédérale de Lausanne, Switzerland
Georg Woltersdorf, Martin-Luther-Universität Halle-Wittenberg
Ken-Ichi Uchida, Tohoku University, Sendai, Japan
Koji Sekiguchi, Keio University, Japan
llya Krivorotov, University of California, Irvine, U.S.A.
Madjid Anane, CNRS/Thales, Frankreich
Rantej Bali, Helmholtz-Zentrum Dresden-Rossendorf
Sabine Wurmehl, Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden
Sebastian Gönnenwein, Walther-Meißner-Institut, Garching
Stefan Mathias, Georg-August-Universität Göttingen
Tobias Kampfrath, Fritz-Haber-Institut, Berlin
Valery Pokrovsky, Texas A&M; University, U.S.A.
Vladislav Demidov, Westfälische Wilhelms-Universität Münster