Keio University

Tohoku University

Yosuke Kajiwara

Eiji Saitoh

Kenichi Uchida

Kazuya Harii

Kazuya Ando

Hiroyasu Nakayama

The thermoelectric conversion efficiency of a thermoelectric conversion device is increased by increasing the figure of merit of a spin-Seebeck effect element. An inverse spin-Hall effect material is provided to at least one end of a thermal spin-wave spin current generating material made of a magnetic dielectric material so that a thermal spin-wave spin current is converted to generate a voltage in the above described inverse spin-Hall effect material when there is a temperature gradient in the above described thermal spin-wave spin current generating material and a magnetic field is applied using a magnetic field applying means.

Thermoelectric conversion device

A concrete means for making transmission over long distances possible using a spin-wave spin current is provided in a spintronic device and an information transmitting method. At least one metal electrode made of any of Pt, Au, Pd, Ag, Bi, alloys of these, or elements having an f-orbital are provided on top of a magnetic dielectric layer and, so that spin-wave spin current&#x2014;pure spin current exchange is carried out at the interface between the above described magnetic dielectric layer and the above described metal electrode.

Spintronic device and information transmitting method

The invention relates to a spin current thermal conversion device and a thermoelectric conversion device, with which a spin current is thermally generated, and its concrete application is realized. A temperature gradient creating means which creates a temperature gradient in a thermal spin current generating member is provided in a thermal spin current generating member made of either a ferromagnetic member or a conductive member containing a ferromagnetic substance.

Growing community of inventors

Miyagi, Japan

Yosuke Kajiwara