10-16 June 2018
Dalhousie University
America/Halifax timezone
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POS-33 Standing helimagnons in MnSi thin films

12 Jun 2018, 18:00
1h 30m
SUB McInnes Hall (Dalhousie University)

SUB McInnes Hall

Dalhousie University

Poster Competition (Undergraduate Student) / Compétition affiches (Étudiant(e) du 1er cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) DCMMP Poster Session & Finals: Poster Competition and Mingle Session with Industry Partners (28) / Employers | Session d'affiches DPMCM et finales: Concours d'affiches et rencontres avec partenaires industriels et employeurs (28)

Speaker

Mr Nicholas Ilow (Dalhousie University)

Description

A number of recent calculations and experiments have identified that strain and finite size effects are important contributions that influence the stability of the magnetic textures in MnSi thin films. Both of these effects play an important role in MnSi films grown on Si substrates and have an important influence on the magnetic phase diagram. However, there continues to exist controversy over the interpretation of the phase diagram. With insights from ferromagnetic resonance, magnetometry, Hall effect and polarized neutron reflectometry in out-of-plane fields, a consistent picture emerges with the cone phase as the sole equilibrium phase below the saturation field. We present numerical modelling of spin-orbit torque induced ferromagnetic resonance experiments. Micromagnetic calculations reveal standing helimagnons and excitations of the surface twists in the film that explain the data.

Primary authors

Mr Nicholas Ilow (Dalhousie University) Dr Chiara Ciccarelli (University of Cambridge ) Dr Andrew Ferguson (University of Cambridge) Prof. Theodore Monchesky (Dalhousie University)

Presentation Materials

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