Ballistic Hall Photo-Voltammetry of Magnetic Resonance in Individual Nanomagnets

Alain Nogaret, Maksym Stebliy, Jean-Claude Portal, Harvey Beere, D. A. Ritchie

Research output: Contribution to journalArticlepeer-review


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
JournalPhysical Review Letters
Publication statusAcceptance date - 26 Apr 2021

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