DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2013 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

DF: Fachverband Dielektrische Festkörper

DF 12: Poster 1

DF 12.23: Poster

Tuesday, March 12, 2013, 10:30–13:30, Poster D

All-electrical spin-wave spectroscopy on skyrmions in MnSi — •Ioannis Stasinopoulos1, Thomas Schwarze1, Andreas Bauer2, Helmuth Berger3, Johannes Waizner4, Markus Garst4, Christian Pfleiderer2, Achim Rosch4, and Dirk Grundler1,51Physik-Department E10, TU München, Garching, Germany — 2Physik-Department, FG Magnetische Materialien, TU München, Garching, Germany — 3EPFL, Institut de physique de la matiere complexe, Lausanne, Switzerland — 4Institute for Theoretical Physics, Univ. Köln, Köln, Germany — 5STI, EPFL, Lausanne, Switzerland

Skyrmions are topologically stable spin textures with the spins pointing in all directions wrapping up a sphere. The resulting core spins point in opposite direction compared to the outside ones. The recently discovered skyrmion phase (so-called A phase) is formed in a specific magnetic field-temperature (H-T) region of chiral helimagnets, such as MnSi, where skyrmions crystallize at about T=28 K and µ0H=200 mT in a hexagonal lattice with a typical lattice constant of 18 nm. Our group uses an all-electrical microwave spectroscopy setup based on a vector analyzer and lithographically fabricated coplanar waveguides to excite and simultaneously probe the skyrmion states in MnSi. An out-of plane static magnetic field in combination with a He flow cryostat is used to define the skyrmion phase conditions. The observed resonances lie in the low GHz regime. Financial support by the DFG via TRR80 and NIM is acknowledged.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2013 > Regensburg