Spin motor and rotary member

Patent metadata

Field	Value
Publication number	US-9548634-B2
Application number	US-201314420516-A
Country	US
Kind code	B2
Filing date	Jul 25, 2013
Priority date	Aug 9, 2012
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A spin rotary member includes a substrate, a spin injector made of a ferromagnetic material magnetized in a substrate in-plane direction, and provided on the substrate, a spin rotor made of a ferromagnetic material having a magnetic moment rotatable in the substrate in-plane direction, and provided on the substrate, being separated from the spin injector, a channel part made of a non-magnetic material, arranged between the spin injector and the spin rotor, and bonded with the spin injector and the spin rotor directly or through an insulating layer, and a spin rotation control part configured to control a rotation direction of spin of the channel part.

First claim

What is claimed is:

1. A spin rotary member, comprising:
a substrate;
a spin injector made of a ferromagnetic material magnetized in a substrate in-plane direction, and provided on the substrate;
a disk-like spin rotor made of a ferromagnetic material having a magnetic moment rotatable in the substrate in-plane direction, and provided on the substrate, being separated from the spin injector;
a channel part made of a non-magnetic material, arranged between the spin injector and the spin rotor, and bonded with the spin injector and the spin rotor directly or through an insulating layer; and
a spin rotation control part configured to control a rotation direction of spin of the channel part.

2. The spin rotary member according to claim 1 , wherein the spin rotation control part is bonded with the channel part directly or through an insulating layer, and configured to apply a voltage to the channel part.

3. The spin rotary member according to claim 1 , wherein the spin rotation control part irradiates the channel part with circularly polarized light.

4. The spin rotary member according to claim 1 , wherein the spin rotation control part changes a voltage value to be applied to the spin injector.

5. The spin rotary member according to claim 1 , wherein the channel part is formed of a semiconductor material.

6. The spin rotary member according to claim 1 , wherein the channel part includes a two-dimensional electron gas layer.

7. The spin rotary member according to claim 1 , wherein the channel part is a linear member arranged such that an axial direction faces an in-plane direction; and
a diameter of the spin rotor is smaller than a line width of the channel part.

8. A spin motor, comprising:
a substrate;
a spin injector made of a ferromagnetic material magnetized in a substrate in-plane direction, and provided on the substrate;
a spin rotor made of a ferromagnetic material having a magnetic moment rotatable in the substrate in-plane direction, and provided on the substrate, being separated from the spin injector;
a channel part made of a non-magnetic material, arranged between the spin injector and the spin rotor, and bonded with the spin injector and the spin rotor directly or through an insulating layer;
a spin rotation control part configured to control a rotation direction of spin of the channel part; and
a motor rotor made of a ferromagnetic material, arranged to face and to be separated from the spin rotor, and configured to be rotated following the magnetic moment of the spin rotor.

9. The spin motor according to claim 8 , wherein
the spin rotor has a disk shape, and
the motor rotor is arranged such that a direction axis is perpendicular to the substrate.

10. The spin motor according to claim 8 , wherein
the channel part is formed on the substrate;
the spin injector and the spin rotor are formed on the channel part; and
the motor rotor is arranged to be separated above the spin rotor.

Assignees

• Japan Science & Tech Agency
• Univ York

Inventors

• Hirohata Atsufumi

Classifications

• H10D48/385 Primary

  Devices using spin-polarised carriers · CPC title

• H02K1/12

  Stationary parts of the magnetic circuit · CPC title

• H02K1/27 Primary

  Rotor cores with permanent magnets · CPC title

• H01L29/66984

  Electricity · mapped topic

• H02N1/002

  Electrostatic motors · CPC title