TEMPERATURE DEPENDENCE OF SPIN PINNING AND SPIN-WAVE DISPERSION IN NANOSCOPIC FERROMAGNETIC WAVEGUIDES

被引：2

作者：

Heinz, B. ^{[1
,2
]}

Wang, Q. ^{[1
,3
]}

Verba, R. ^{[4
]}

Vasyuchka, V., I ^{[1
]}

Kewenig, M. ^{[1
]}

Pirro, P. ^{[1
]}

Schneider, M. ^{[1
]}

Meyer, T. ^{[1
,5
]}

Lagel, B. ^{[6
]}

Dubs, C. ^{[7
]}

Bracher, T. ^{[1
]}

Dobrovolskiy, O., V ^{[3
]}

Chumak, A., V ^{[1
,3
]}

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys & Landesforschungszentrum OPTIMA, Erwin Schrodinger Str 56, D-67663 Kaiserslautern, Germany

[2] Grad Sch Mat Sci Mainz, Staudingerwerg 9, D-55128 Mainz, Germany

[3] Univ Vienna, Fac Phys, Nanomagnetism & Magnon, Boltzmanngasse 5, A-1090 Vienna, Austria

[4] Inst Magnetism, 36-b,Vernadskogo Blvd, UA-03142 Kiev, Ukraine

[5] THATec Innovat GmbH, Augustaanlage 23, D-68165 Mannheim, Germany

[6] Tech Univ Kaiserslautern, Nano Structuring Ctr, Erwin Schrodinger Str 13, D-67663 Kaiserslautern, Germany

[7] INNOVENT Ev, Technol Entwicklung, Prussingstr 27B, D-07745 Jena, Germany

来源：

UKRAINIAN JOURNAL OF PHYSICS | 2020年 / 65卷 / 12期

基金：

欧洲研究理事会; 奥地利科学基金会;

关键词：

spin waves; yttrium iron garnet; Brillouin light scattering spectroscopy; low temperatures; MAGNON; MAGNETIZATION; RESONANCE; SPECTRUM; MODES; FILMS;

D O I：

10.15407/ujpe65.12.1094

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The field of magnonics attracts significant attention due to the possibility of utilizing information coded into the spin-wave phase or amplitude to perform computation operations on the nanoscale. Recently, spin waves were investigated in Yttrium Iron Garnet (YIG) waveguides with widths down to 50 nm and aspect ratios of thickness to width approaching unity. A critical width was found, below which the exchange interaction suppresses the dipolar pinning phenomenon, and the system becomes unpinned. Here, we continue these investigations and analyze the pinning phenomenon and spin-wave dispersion as functions of temperature, thickness, and material parameters. Higher order modes, the influence of a finite wavevector along the waveguide, and the impact of the pinning phenomenon on the spin-wave lifetime are discussed, as well as the influence of a trapezoidal cross-section and edge roughness of the waveguide. The presented results are of particular interest for potential applications in magnonic devices and the incipient field of quantum magnonics at cryogenic temperatures.

引用

页码：1094 / 1108

页数：15

共 55 条

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