Prof. Takeshi Seki Profile

Prof. Takeshi Seki

at Tohoku Univ

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 1 August 2021 Presentation

Development of Cu-based spin Hall materials

Takeshi Seki, Hiroto Masuda, Koki Takanashi

Proceedings Volume 11805, 1180503 (2021) https://doi.org/10.1117/12.2595561

Read Abstract +

A promising way for the conversion from charge current to spin current is to exploit the spin Hall effect (SHE). Aside from the usage of elemental nonmagnetic materials, element doping or alloying is a promising way to develop a spin Hall material. In order to reveal the optimum composition for achieving the large SHE in the Cu-Ir binary alloys, we exploited the high-throughput combinatorial technique based on spin Peltier imaging. They discovered that the non-equilibrium Cu-Ir alloys beyond the solubility limit are candidates to achieve the large SHE, in which a large spin-Hall angle of ~ 6% was obtained for Cu76Ir24. In addition to the aspect from SHE, we also found that Cu-Ir is a nonmagnetic spacer layer material allowing us to realize moderately strong antiferromagnetic coupling (AFC) between two ferromagnetic layers separately by Cu-Ir. The simultaneous achievement of AFC and SHE makes the Cu-Ir an useful material for antiferromagnetic spintronics.

Proceedings Article | 20 August 2020 Presentation

Large spin anomalous Hall effect in L10-FePt

Takeshi Seki

Proceedings Volume 11470, 114701D (2020) https://doi.org/10.1117/12.2567417

KEYWORDS: Fermium, Spintronics, Frequency modulation, Copper, Modulation, Ferromagnetics, Switching

Read Abstract +

The spin-charge conversion in ferromagnetic materials is a recent intriguing research topic. We report the large spin anomalous Hall effect (spin-AHE) in an L10-FePt ferromagnet. The spin anomalous Hall angle was evaluated to be ~ 0.25 for the L10-FePt from the linewidth modulation of ferromagnetic resonance spectra by dc current application. The evaluation of spin anomalous Hall angle at different configurations between applied electric current and the L10-FePt magnetization allowed us to examine the symmetry of spin-AHE. By utilizing the large spin anomalous Hall angle of L10-FePt, we also have successfully demonstrated spin-AHE-induced switching of the Permalloy magnetization.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years