Hybrid magnetization dynamics in Cu2OSeO3/NiFe heterostructures

Carolina Lüthi; Luis Flacke; Aisha Aqeel; Akashdeep Kamra; Rudolf Gross; Christian Back; Mathias Weiler

doi:10.1063/5.0128733

Hybrid magnetization dynamics in Cu₂OSeO₃/NiFe heterostructures

Carolina Lüthi, Luis Flacke, Aisha Aqeel, Akashdeep Kamra, Rudolf Gross, Christian Back, Mathias Weiler

Chair of Experimental Physics of Functional Spin-Systems

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet Cu 2 OSeO 3 (CSO) and a polycrystalline ferromagnet NiFe (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly fourfold anisotropy in contrast to the FMR of CSO and Py.

Original language	English
Article number	012401
Journal	Applied Physics Letters
Volume	122
Issue number	1
DOIs	https://doi.org/10.1063/5.0128733
State	Published - 2 Jan 2023

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title = "Hybrid magnetization dynamics in Cu2OSeO3/NiFe heterostructures",

abstract = "We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet Cu 2 OSeO 3 (CSO) and a polycrystalline ferromagnet NiFe (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly fourfold anisotropy in contrast to the FMR of CSO and Py.",

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AU - Lüthi, Carolina

AU - Flacke, Luis

AU - Aqeel, Aisha

AU - Kamra, Akashdeep

AU - Gross, Rudolf

AU - Back, Christian

AU - Weiler, Mathias

PY - 2023/1/2

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N2 - We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet Cu 2 OSeO 3 (CSO) and a polycrystalline ferromagnet NiFe (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly fourfold anisotropy in contrast to the FMR of CSO and Py.

AB - We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet Cu 2 OSeO 3 (CSO) and a polycrystalline ferromagnet NiFe (Py) thin film using broadband ferromagnetic resonance (FMR) at cryogenic temperatures. We observe the excitation of a hybrid mode (HM) below the helimagnetic transition temperature of CSO. This HM is attributed to the spin dynamics at the CSO/Py interface. We study the HM by measuring its resonance frequencies for in plane rotations of the external magnetic field. We find that the HM exhibits dominantly fourfold anisotropy in contrast to the FMR of CSO and Py.

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JO - Applied Physics Letters

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ER -

Hybrid magnetization dynamics in Cu₂OSeO₃/NiFe heterostructures

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