Spin-Wave Phase Inverter upon a Single Nanodefect

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Dobrovolskiy, OV (Autor) Outra; Sachser, R (Autor) Outra; Bunyaev, SA (Autor) FCUP; Navas, D (Autor) Outra; Bevz, VM (Autor) Outra; Zelent, M (Autor) Outra; Smigaj, W (Autor) Outra; Rychly, J (Autor) Outra; Krawczyk, M (Autor) Outra; Vovk, RV (Autor) Outra; Huth, M (Autor) Outra; G.N. Kakazei (Autor) FCUP

Revista

Título: ACS Applied Materials & Interfaces

Vol. 11 Nº 6

ISSN: 1944-8244

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 43 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00Q-M4Z

DOI: 10.1021/acsami.9b02717

Abstract (EN): Local modification of magnetic properties of nanoelements is a key to design future-generation magnonic devices in which information is carried and processed via spin waves. One of the biggest challenges here is to fabricate simple and miniature phase-controlling elements with broad tunability. Here, we successfully realize such spin-wave phase shifters upon a single nanogroove milled by a focused ion beam in a Co-Fe microsized magnonic waveguide. By varying the groove depth and the in-plane bias magnetic field, we continuously tune the spin-wave phase and experimentally evidence a complete phase inversion. The microscopic mechanism of the phase shift is based on the combined action of the nanogroove as a geometrical defect and the lower spin-wave group velocity in the waveguide under the groove where the magnetization is reduced due to the incorporation of Ga ions during the ion-beam milling. The proposed phase shifter can easily be on-chip integrated with spin-wave logic gates and other magnonic devices. Our findings are crucial for designing nanomagnonic circuits and for the development of spin-wave nano-optics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9