Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators

Erick O. Burgos Parra; Nick Bukin; Maxime Dupraz; Guillaume Beutier; Sohrab Redjai Sani; Horia Popescu; Stuart A. Cavill; Johan Akerman; Nicolas Jaouen; Paul S. Keatley; Robert J. Hicken; Gerrit Van Der Laan; Feodor Y. Ogrin

doi:10.1109/TMAG.2016.2528959

Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators

Erick O. Burgos Parra^*, Nick Bukin, Maxime Dupraz, Guillaume Beutier, Sohrab Redjai Sani, Horia Popescu, Stuart A. Cavill, Johan Akerman, Nicolas Jaouen, Paul S. Keatley, Robert J. Hicken, Gerrit Van Der Laan, Feodor Y. Ogrin

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Time-averaged images of the magnetization within single-layer spin-transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator technique. Transport measurements on a Pd(5)-Cu(20)-Ni₈₁Fe₁₉(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and-24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.

Original language	English
Article number	7404250
Number of pages	4
Journal	Advances in magnetics
Volume	52
Issue number	7
Early online date	11 Feb 2016
DOIs	https://doi.org/10.1109/TMAG.2016.2528959
Publication status	Published - 1 Jul 2016

Keywords

HERALDO
Magnetic vortex
Spin transfer torque

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10.1109/TMAG.2016.2528959

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title = "Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators",

abstract = "Time-averaged images of the magnetization within single-layer spin-transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and-24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.",

keywords = "HERALDO, Magnetic vortex, Spin transfer torque",

author = "{Burgos Parra}, {Erick O.} and Nick Bukin and Maxime Dupraz and Guillaume Beutier and Sani, {Sohrab Redjai} and Horia Popescu and Cavill, {Stuart A.} and Johan Akerman and Nicolas Jaouen and Keatley, {Paul S.} and Hicken, {Robert J.} and {Van Der Laan}, Gerrit and Ogrin, {Feodor Y.}",

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doi = "10.1109/TMAG.2016.2528959",

language = "English",

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T1 - Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators

AU - Burgos Parra, Erick O.

AU - Bukin, Nick

AU - Dupraz, Maxime

AU - Beutier, Guillaume

AU - Sani, Sohrab Redjai

AU - Popescu, Horia

AU - Cavill, Stuart A.

AU - Akerman, Johan

AU - Jaouen, Nicolas

AU - Keatley, Paul S.

AU - Hicken, Robert J.

AU - Van Der Laan, Gerrit

AU - Ogrin, Feodor Y.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Time-averaged images of the magnetization within single-layer spin-transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and-24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.

AB - Time-averaged images of the magnetization within single-layer spin-transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and-24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.

KW - HERALDO

KW - Magnetic vortex

KW - Spin transfer torque

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U2 - 10.1109/TMAG.2016.2528959

DO - 10.1109/TMAG.2016.2528959

M3 - Article

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JO - Advances in magnetics

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Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators

Abstract

Keywords

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