# Large Magnetoresistance in a Si-Based Double-Tunnel Junction with Purely Organic Radical Molecules

https://mdr.nims.go.jp/datasets/1388d5df-bd0e-40a9-8b7d-d3fdb961db55

## File

- [large-magnetoresistance-in-a-si-based-double-tunnel-junction-with-purely-organic-radical-molecules.pdf](https://mdr.nims.go.jp/filesets/2fd2755e-66df-4ff6-a1a7-2da2eb623592/download) ([Detail](https://mdr.nims.go.jp/filesets/2fd2755e-66df-4ff6-a1a7-2da2eb623592.md))

## Id

1388d5df-bd0e-40a9-8b7d-d3fdb961db55

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-03T04:27:18.645824Z

## Updated at

2026-07-03T04:31:04.628022Z

## Published at

2026-07-03T07:29:20.762493Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.6c01526

## Date published

2026-07-01

## Recorded date published

2026-7-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Large Magnetoresistance in a Si-Based Double-Tunnel Junction with Purely
    Organic Radical Molecules
  title_type: original
  lang: en

## Description

- description: "Organic radicals have shown promise for tunable, low-cost spintronic
    function. However, \r\nintegrating the radicals with a Si metal‒oxide‒semiconductor
    (MOS) structure remains a \r\nchallenge. Here, we successfully incorporate stable
    (4-(((2,5-bis(2-\r\n(phenyl)ethynyl)phenyl)carbonyl)(methyl)amino)-2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl
    \r\n(TEMPO-OPE) radicals in a Si-MOS-based double-tunnel junction and demonstrate
    a huge \r\npositive magnetoresistance of up to 400 % at a magnetic field of 7
    T and a temperature of 3 K. \r\nThis goes along with a significant splitting of
    the differential conductance peak corresponding \r\nto the highest occupied molecular
    orbital of TEMPO-OPE under external magnetic fields. First-principles calculations
    suggest the radical’s singly occupied orbital to be close to the Fermi \r\nlevel
    of the junction, and in close spatial proximity to one of the oxide layers and
    to the OPE \r\nbackbone. This could provide a possible origin of the large magnetoresistance.
    These findings \r\nsuggest a path towards incorporating magnetic molecular functionalities
    into conventional Si \r\ndevices, leading to large-scale integration of molecular
    spintronic devices."
  description_type: abstract
  lang: und

## Creator

- name: Jayanta Bera
  role: author
- name: Tuhin Shuvra Basu
  role: author
- name: Jannic Wolf
  role: author
- name: Haitao Zhang
  role: author
- name: Kazuhiro Marumoto
  role: author
  orcid: https://orcid.org/0000-0001-9792-0775
- name: Yutaka Wakayama
  role: author
  orcid: https://orcid.org/0000-0002-0801-8884
- name: Carmen Herrmann
  role: author
  orcid: https://orcid.org/0000-0002-9496-0664
- name: Thomas Huhn
  role: author
  orcid: https://orcid.org/0000-0001-6292-4215
- name: Ryoma Hayakawa
  role: author
  orcid: https://orcid.org/0000-0002-1442-8230

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: organic radicals, magnetoresistance, unpaired electrons, resonant tunneling,
    molecular orbitals, Si-based double-tunnel junctions
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '26'
  issue: '25'
  start_page: 8257
  end_page: 8264

## Conference



## Related item



## Funding

- identifier: 23K22802
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 24KF0270
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1223NM5170
  funder_name: Advanced Research Infrastructure for Materials and Nanotechnology,
    Ministry of Education, Culture, Sports, Science and Technology
- funder_name: High-Performance Computing Center at University of Hamburg
- funder_name: Research Center for Materials Nanoarchitectonics, National Institute
    for Materials Science
- identifier: GRK 2536 NANOHYBRID
  funder_name: German Research Foundation
- identifier: HE-5675/6-1
  funder_name: German Research Foundation

## 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



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## Custom property



## Fileset

- id: 2fd2755e-66df-4ff6-a1a7-2da2eb623592
  filename: large-magnetoresistance-in-a-si-based-double-tunnel-junction-with-purely-organic-radical-molecules.pdf
  content_type: application/pdf
  size: 4001951
  md5: fd5cd1042c22aae42753b9e2fa348727

## Thumbnail

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filename: large-magnetoresistance-in-a-si-based-double-tunnel-junction-with-purely-organic-radical-molecules.pdf