Local magnetic characterization of (Ga,Mn)As continuous thin film using scanning probe force microscopy

Lee, Inhee; Obukhov, Yuri N.; Kim, Jongjoo; Li, Xia; Samarth, N.; Pelekhov, Denis V.; Hammel, P. C.

doi:10.1103/physrevb.85.184402

Cited by 3 publications

(1 citation statement)

References 26 publications

(39 reference statements)

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“…Localized spin waves are fundamentally important magnetic excitations in ferromagnets (FM) with significant technological implications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Ferromagnetic resonance force microscopy (FMRFM) is a powerful spatially-resolved technique for understanding local spin dynamics in buried and exposed magnetic nanostructures with high sensitivity and spectroscopic precision [1][2][3][4][5][6][7][8][9][10][11][12][20][21][22][23]. FMRFM uses the inhomogeneous magnetic dipolar field of a scanned magnetic probe to create and detect localized spin wave modes [1-3, 6, 8, 9, 12].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical understanding of localized spin wave mode behavior in broadly tunable spatially complex magnetic configurations

Adur

Wang

et al. 2014

Phys. Rev. B

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Spin wave modes confined in a ferromagnetic film by the spatially inhomogeneous magnetic field generated by a scanned micromagnetic tip of a ferromagnetic resonance force microscope (FMRFM) enable microscopic imaging of the internal fields and spin dynamics in nanoscale magnetic devices. Here we report a detailed study of spin wave modes in a thin ferromagnetic film localized by magnetic field configurations frequently encountered in FMRFM experiments, including geometries in which the probe magnetic moment is both parallel and antiparallel to the applied uniform magnetic field. We demonstrate that characteristics of the localized modes, such as resonance field and confinement radius, can be broadly tuned by controlling the orientation of the applied field relative to the film plane. Micromagnetic simulations accurately reproduce our FMRFM spectra allowing quantitative understanding of the localized modes. Our results reveal a general method of generating tightly confined spin wave modes in various geometries with excellent spatial resolution that significantly facilitates the broad application of FMRFM. This paves the way to imaging of magnetic properties and spin wave dynamics in a variety of contexts for uncovering new physics of nanoscale spin excitations.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical understanding of localized spin wave mode behavior in broadly tunable spatially complex magnetic configurations

Adur

Wang

et al. 2014

Phys. Rev. B

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Nonequilibrium spin transport through a diluted magnetic semiconductor quantum dot system with noncollinear magnetization

Jalil

Tan

2013

Annals of Physics

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In situ absolute magnetometry in an UHV scanning probe microscope using conducting polymer-thin film

Ambal

Williams

Boehme

2017

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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The in situ measurement and control of the direction and magnitude of the magnetic field is demonstrated within the sample plane of a low-temperature ultra-high vacuum scanning probe microscope. These measurements utilized electrically detected magnetic resonance magnetometry based on the spin-dependent recombination current in a conducting polymer-thin film. The presented magnetometry approach allows the absolute measurement of systematic magnetic offset fields with a resolution on the order of ≈5μT/Hz with an angular resolution below ≈1°. As the polymer film covers a macroscopic area within the sample plane, magnetometry becomes possible at various locations within the sample plane and thus the determination of magnetic field gradients.

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Local magnetic characterization of (Ga,Mn)As continuous thin film using scanning probe force microscopy

Cited by 3 publications

References 26 publications

Experimental and numerical understanding of localized spin wave mode behavior in broadly tunable spatially complex magnetic configurations

Experimental and numerical understanding of localized spin wave mode behavior in broadly tunable spatially complex magnetic configurations

Nonequilibrium spin transport through a diluted magnetic semiconductor quantum dot system with noncollinear magnetization

In situ absolute magnetometry in an UHV scanning probe microscope using conducting polymer-thin film

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