Electronic devices

Patent metadata

Field	Value
Publication number	US-10018689-B2
Application number	US-201314436724-A
Country	US
Kind code	B2
Filing date	Oct 21, 2013
Priority date	Oct 19, 2012
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

We describe a method of detecting a voltage from a spin-current, the spin-current comprising a current having a spin predominantly aligned in a spin direction, the method comprising: flowing the spin current through a layer of organic material in a vertical direction through the layer; and detecting an electric field in a lateral direction in the layer of organic material. In a preferred embodiment the organic layer is anisotropic and has a higher electrical conductivity in the lateral direction than in the vertical direction.

First claim

The invention claimed is:

1. A method of detecting an electrical signal from a spin-current, wherein said spin-current comprises a current having a spin predominantly aligned in a spin direction, the method comprising:
flowing said spin-current through a layer of organic material in a vertical direction through said layer; and
detecting a charge current or an electric field in a lateral direction in said layer of organic material, wherein said layer of organic material has an anisotropic electrical conductivity, having a higher conductivity in said lateral direction, which defines a high conductivity direction, than in said vertical direction, which defines a low conductivity direction;
injecting the spin-current in the low conductivity direction; and
converting the injected spin-current into the charge current, wherein the charge current flows in the high conductivity direction, said converting comprising converting the spin-current into the charge current in the layer of organic material using the Inverse Spin Hall effect.

2. A method as claimed in claim 1 further comprising generating said spin-current by flowing an electrical current through a magnetic material adjacent said layer of organic material.

3. A method as claimed in claim 1 further comprising generating said spin-current by exciting magnetic resonance in a magnetic material adjacent said layer of organic material using an oscillating drive signal.

4. A method as recited in claim 1 wherein said layer of organic material includes a material to enhance spin-orbit coupling within said layer of organic material.

5. A method as claimed in claim 1 further comprising:
generating a voltage in said organic material using the Inverse Spin Hall Effect; and
detecting the generated voltage.

6. A method as claimed in claim 1 wherein the layer of organic material comprises a conjugated polymer.

7. A method as recited in claim 1 wherein the layer of organic material has a lamellar structure comprising polymer backbones generally orientated within layers within the structure.

8. A method as recited in claim 7 wherein the polymer backbones lie preferentially in the lateral direction, the polymer having side chains lying preferentially in the vertical direction, and wherein said polymer backbones have a higher electrical conductivity than said side chains.

Assignees

• Sirringhaus Henning
• Ando Kazuya
• Saitoh Eiji
• Mooser Sebastian
• Watanabe Shun
• Cambridge Entpr Ltd
• Univ Tohoku

Inventors

• Sirringhaus Henning
• Ando Kazuya
• Saitoh Eiji
• Mooser Sebastian
• Watanabe Shun

Classifications

• G01R33/075

  Hall devices configured for spinning current measurements · CPC title

• G01R33/1284 Primary

  Spin resolved measurements; Influencing spins during measurements, e.g. in spintronics devices · CPC title

• H01L43/10

  Electricity · mapped topic

• H01L37/00

  Electricity · mapped topic

• H01L43/065

  Electricity · mapped topic