Two-dimensional control of magnons toward magnonics

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K17436
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural physics
• Research Institution: Nagoya University
• Principal Investigator: Tanabe Kenji 名古屋大学, 理学研究科, 助教 (00714859)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: スピントロニクス / マグノニクス / マグノン / スピン波 / スネルの法則 / ホール効果

Outline of Final Research Achievements

We have investigated the propagation of magnons (quanta of spin waves) in terms of the wave and particle pictures for achieving a magnonic device. In the terms of the wave picture, we have demonstrated the Snell’s law for spin waves, which indicates that the propagation direction of the spin waves is refracted at a step structure in thin ferromagnetic films. On the other hand, we find that the position of the magnons is changed owing to the Berry’s phase in the magnon band structure when they are scattered by the edge of the sample. Our results may lead to two-dimensional control of the magnons.

Free Research Field

スピントロニクス