Probing wavenumbers of current-induced excitations in point-contact experiments

Z Wei, M TsoiDepartment of Physics, Center for Nano and Molecular Science and Technology, and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USAAbstract: We demonstrate how a mechanical point-contact technique can provide information on the wavenumber of spin waves excited...

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Autores principales:	Z Wei, M Tsoi
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2010
Materias:	Medical technology R855-855.5 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/4313373e0e064931959a2a6e548120d9
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spelling	oai:doaj.org-article:4313373e0e064931959a2a6e548120d92021-12-02T02:16:24ZProbing wavenumbers of current-induced excitations in point-contact experiments1177-8903https://doaj.org/article/4313373e0e064931959a2a6e548120d92010-06-01T00:00:00Zhttp://www.dovepress.com/probing-wavenumbers-of-current-induced-excitations-in-point-contact-ex-a4550https://doaj.org/toc/1177-8903Z Wei, M TsoiDepartment of Physics, Center for Nano and Molecular Science and Technology, and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USAAbstract: We demonstrate how a mechanical point-contact technique can provide information on the wavenumber of spin waves excited by high-density electrical current in magnetic multilayers. By varying the size of point-contacts, we have been able to control the size of the excitation volume and therefore the wavelength of current-induced spin waves. This leads to a technique with in situ sensitivity to wavenumbers of current-induced excitations. Our detailed size-dependent measurements support the prediction that the excited wavelength is determined by the contact size.Keywords: spin transfer torque, giant magnetoresistance, spin waves, point contact Z WeiM TsoiDove Medical PressarticleMedical technologyR855-855.5Chemical technologyTP1-1185ENNanotechnology, Science and Applications, Vol 2010, Iss default, Pp 17-21 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medical technology R855-855.5 Chemical technology TP1-1185
spellingShingle	Medical technology R855-855.5 Chemical technology TP1-1185 Z Wei M Tsoi Probing wavenumbers of current-induced excitations in point-contact experiments
description	Z Wei, M TsoiDepartment of Physics, Center for Nano and Molecular Science and Technology, and Texas Materials Institute, The University of Texas at Austin, Austin, TX, USAAbstract: We demonstrate how a mechanical point-contact technique can provide information on the wavenumber of spin waves excited by high-density electrical current in magnetic multilayers. By varying the size of point-contacts, we have been able to control the size of the excitation volume and therefore the wavelength of current-induced spin waves. This leads to a technique with in situ sensitivity to wavenumbers of current-induced excitations. Our detailed size-dependent measurements support the prediction that the excited wavelength is determined by the contact size.Keywords: spin transfer torque, giant magnetoresistance, spin waves, point contact
format	article
author	Z Wei M Tsoi
author_facet	Z Wei M Tsoi
author_sort	Z Wei
title	Probing wavenumbers of current-induced excitations in point-contact experiments
title_short	Probing wavenumbers of current-induced excitations in point-contact experiments
title_full	Probing wavenumbers of current-induced excitations in point-contact experiments
title_fullStr	Probing wavenumbers of current-induced excitations in point-contact experiments
title_full_unstemmed	Probing wavenumbers of current-induced excitations in point-contact experiments
title_sort	probing wavenumbers of current-induced excitations in point-contact experiments
publisher	Dove Medical Press
publishDate	2010
url	https://doaj.org/article/4313373e0e064931959a2a6e548120d9
work_keys_str_mv	AT zwei probingwavenumbersofcurrentinducedexcitationsinpointcontactexperiments AT mtsoi probingwavenumbersofcurrentinducedexcitationsinpointcontactexperiments
_version_	1718402589067837440

Probing wavenumbers of current-induced excitations in point-contact experiments

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