Probing wavenumbers of current-induced excitations in point-contact experiments.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Nanotechnology, science and applications
دوره 3 شماره
صفحات -
تاریخ انتشار 2010