Photovoltage spectroscopy of dipolar spin waves in Dy micromagnets

Alain Nogaret, Maksym Stebliy, Jean-Claude Portal, Alexander Samardak, Alexey Ognev, Harvey Beere, David Ritchie

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Abstract

We report on a sensitive spectroscopic technique for probing the spin excitations of individual submicron magnets. This technique uses a high mobility two dimensional electron gas (2DEG) confined in a GaAs/AlGaAs heterojunction to pick up the oscillating dipolar magnetic field emanating from the individual spin wave modes of micromagnets fabricated at its surface. We review a range of dynamic phenomena that demonstrate the formation of magnetostatic waves in finger gate arrays, dipolar edge spin waves in bar magnets, vortex hysteresis in magnetic dots and the photovoltage dependence on microwave polarization.
Original languageEnglish
Pages (from-to)400-406
Number of pages7
JournalSolid State Phenomena
Volume215
DOIs
Publication statusPublished - Apr 2014
Event5th Euro-Asian Symposium on Trends in MAGnetism: Nanomagnetism, EASTMAG 2013 - Vladivostok, Russian Federation
Duration: 15 Sep 201321 Sep 2013

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Spin waves
Two dimensional electron gas
photovoltages
magnons
Magnets
magnets
Spectroscopy
Magnetostatics
magnetostatics
spectroscopy
aluminum gallium arsenides
electron gas
Hysteresis
Heterojunctions
heterojunctions
Vortex flow
hysteresis
Microwaves
vortices
Polarization

Cite this

Nogaret, A., Stebliy, M., Portal, J-C., Samardak, A., Ognev, A., Beere, H., & Ritchie, D. (2014). Photovoltage spectroscopy of dipolar spin waves in Dy micromagnets. Solid State Phenomena, 215, 400-406. https://doi.org/10.4028/www.scientific.net/SSP.215.400

Photovoltage spectroscopy of dipolar spin waves in Dy micromagnets. / Nogaret, Alain; Stebliy, Maksym; Portal, Jean-Claude; Samardak, Alexander; Ognev, Alexey; Beere, Harvey; Ritchie, David.

In: Solid State Phenomena, Vol. 215, 04.2014, p. 400-406.

Research output: Contribution to journalArticle

Nogaret, A, Stebliy, M, Portal, J-C, Samardak, A, Ognev, A, Beere, H & Ritchie, D 2014, 'Photovoltage spectroscopy of dipolar spin waves in Dy micromagnets', Solid State Phenomena, vol. 215, pp. 400-406. https://doi.org/10.4028/www.scientific.net/SSP.215.400
Nogaret, Alain ; Stebliy, Maksym ; Portal, Jean-Claude ; Samardak, Alexander ; Ognev, Alexey ; Beere, Harvey ; Ritchie, David. / Photovoltage spectroscopy of dipolar spin waves in Dy micromagnets. In: Solid State Phenomena. 2014 ; Vol. 215. pp. 400-406.
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