# 631% room temperature tunnel magnetoresistance with large oscillation effect in CoFe/MgO/CoFe(001) junctions

https://mdr.nims.go.jp/datasets/4a5676f0-98dc-4a10-bb8e-ebaaf831f7da

## File

- [126-Appl. Phys. Lett. 122, 112404 (2023)-Scheike.pdf](https://mdr.nims.go.jp/filesets/5fe9e0c1-d242-42c7-a12d-101f45f7c8d5/download) ([Detail](https://mdr.nims.go.jp/filesets/5fe9e0c1-d242-42c7-a12d-101f45f7c8d5.md))

## Id

4a5676f0-98dc-4a10-bb8e-ebaaf831f7da

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-04-25T08:47:02.944579Z

## Updated at

2024-01-05T13:12:02.649249Z

## Published at

2024-01-16T10:52:29.977050Z

## Doi



## First published url

https://doi.org/10.1063/5.0145873

## Date published

2023-03-13

## Recorded date published

2023-3-13

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 631% room temperature tunnel magnetoresistance with large oscillation effect
    in CoFe/MgO/CoFe(001) junctions
  title_type: original
  lang: en

## Description

- description: We demonstrate tunnel magnetoresistance (TMR) ratios of up to 631%
    at room temperature (RT) using CoFe/MgO/CoFe(001) epitaxial magnetic tunnel junctions
    (MTJs). The TMR ratio increased up to 1143% at 10 K. The large TMR ratios resulted
    from the fine-tuning of the atomic-scale structures of the MTJs, such as crystallographic
    orientations and MgO interface oxidation, which are expected to enhance the well-known
    Δ1 coherent tunneling transport. Interestingly, the TMR oscillation effect, which
    is not covered by the standard coherent tunneling theory, also became significant.
    A 0.32-nm period TMR oscillation with increasing MgO thickness dominates the transport
    in a wide range of MgO thicknesses; the peak-to-valley difference of the TMR oscillation
    exceeds 140% at RT, which is attributed to the appearance of large oscillatory
    components in the resistance area product.
  description_type: abstract
  lang: eng

## Creator

- name: Thomas Scheike
  role: author
  orcid: https://orcid.org/0000-0002-9163-5524
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Zhenchao Wen
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hiroaki Sukegawa
  role: author
  orcid: https://orcid.org/0000-0002-4034-7848
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Seiji Mitani
  role: author
  orcid: https://orcid.org/0000-0002-1348-0774
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: magnetic tunnel junctions
  schema: not_defined
- subject: tunnel magnetoresistance
  schema: not_defined
- subject: TMR
  schema: not_defined
- subject: spintronics
  schema: not_defined
- subject: MgO
  schema: not_defined
- subject: epitaxial growth
  schema: not_defined

## Rights

- description: "©2023 Author(s). All article content, except where otherwise noted,
    is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/)."
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: APPLIED PHYSICS LETTERS
  issn: '00036951'
  volume: '122'
  issue: '11'
  start_page: 112404
  end_page: 112404

## Conference



## Related item



## Funding

- identifier: 16H06332
  funder_name: JSPS
  description: JSPS KAKENHI
- identifier: 21H01750
  funder_name: JSPS
  description: JSPS KAKENHI
- identifier: 21H01397
  funder_name: JSPS
  description: JSPS KAKENHI
- funder_name: Cabinet Office, Government of Japan
  description: ImPACT Program of the Council for Science, Technology and Innovation
- identifier: JPNP16007
  funder_name: NEDO
  description: NEDO

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 5fe9e0c1-d242-42c7-a12d-101f45f7c8d5
  filename: 126-Appl. Phys. Lett. 122, 112404 (2023)-Scheike.pdf
  content_type: application/pdf
  size: 2382714
  md5: 1cd344be99a381f8bbe3901e428caee0

## Thumbnail

fileset_id: 5fe9e0c1-d242-42c7-a12d-101f45f7c8d5
filename: 126-Appl. Phys. Lett. 122, 112404 (2023)-Scheike.pdf