Ballistic Hall Photovoltammetry of Magnetic Resonance in Individual Nanomagnets

Alain Nogaret; Maksym Stebliy; Jean Claude Portal; Harvey E. Beere; David A. Ritchie

doi:10.1103/PhysRevLett.126.207701

Ballistic Hall Photovoltammetry of Magnetic Resonance in Individual Nanomagnets

Alain Nogaret, Maksym Stebliy, Jean Claude Portal, Harvey E. Beere, David A. Ritchie

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Abstract

We report on ballistic Hall photo-voltammetry as a contactless probe of localized spin excitations. Spins resonating in the near-field of a two-dimensional electron system are shown to induce a long range electromotive force which we calculate. We use this coupling mechanism to detect the spin wave eigenmodes of a single ferromagnet of sub-100nm size. The high sensitivity of this detection technique, 380 spins/$\sqrt{Hz}$, and its non-invasiveness present advantages for probing magnetization dynamics and spin transport.

Original language	English
Article number	207701
Journal	Physical Review Letters
Volume	126
Issue number	20
Early online date	20 May 2021
DOIs	https://doi.org/10.1103/PhysRevLett.126.207701
Publication status	Published - 20 May 2021

Bibliographical note

Funding Information:
This research was supported by the European Union FP7 IRSES 318973.

Publisher Copyright:
© 2021 American Physical Society.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

Funding

This research was supported by the European Union FP7 IRSES 318973.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.126.207701

Ballistic_spectro_v7.PDFAccepted author manuscript, 2.32 MB

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title = "Ballistic Hall Photovoltammetry of Magnetic Resonance in Individual Nanomagnets",

abstract = "We report on ballistic Hall photo-voltammetry as a contactless probe of localized spin excitations. Spins resonating in the near-field of a two-dimensional electron system are shown to induce a long range electromotive force which we calculate. We use this coupling mechanism to detect the spin wave eigenmodes of a single ferromagnet of sub-100nm size. The high sensitivity of this detection technique, 380 spins/$\sqrt{Hz}$, and its non-invasiveness present advantages for probing magnetization dynamics and spin transport.",

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AU - Portal, Jean Claude

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AU - Ritchie, David A.

N1 - Funding Information: This research was supported by the European Union FP7 IRSES 318973. Publisher Copyright: © 2021 American Physical Society. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

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N2 - We report on ballistic Hall photo-voltammetry as a contactless probe of localized spin excitations. Spins resonating in the near-field of a two-dimensional electron system are shown to induce a long range electromotive force which we calculate. We use this coupling mechanism to detect the spin wave eigenmodes of a single ferromagnet of sub-100nm size. The high sensitivity of this detection technique, 380 spins/$\sqrt{Hz}$, and its non-invasiveness present advantages for probing magnetization dynamics and spin transport.

AB - We report on ballistic Hall photo-voltammetry as a contactless probe of localized spin excitations. Spins resonating in the near-field of a two-dimensional electron system are shown to induce a long range electromotive force which we calculate. We use this coupling mechanism to detect the spin wave eigenmodes of a single ferromagnet of sub-100nm size. The high sensitivity of this detection technique, 380 spins/$\sqrt{Hz}$, and its non-invasiveness present advantages for probing magnetization dynamics and spin transport.

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Ballistic Hall Photovoltammetry of Magnetic Resonance in Individual Nanomagnets

Abstract

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