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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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 languageEnglish
Article number207701
JournalPhysical Review Letters
Issue number20
Early online date20 May 2021
Publication statusPublished - 20 May 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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