# Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface

https://mdr.nims.go.jp/datasets/af39ad9c-594c-4b6e-8c9b-4b941d3b5e09

## File

- [Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface.pdf](https://mdr.nims.go.jp/filesets/a696a70e-19ee-4bd5-9308-fc1fb2f3f228/download) ([Detail](https://mdr.nims.go.jp/filesets/a696a70e-19ee-4bd5-9308-fc1fb2f3f228.md))

## Id

af39ad9c-594c-4b6e-8c9b-4b941d3b5e09

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-06T05:02:35.501290Z

## Updated at

2025-07-16T07:17:05.837518Z

## Published at

2025-02-06T07:30:15.725616Z

## Doi

https://doi.org/10.48505/nims.5311

## First published url

https://doi.org/10.1080/14686996.2024.2448417

## Date published

2025-12-31

## Recorded date published

2025-12-31

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Enhanced laser-induced single-cycle terahertz generation in a spintronic
    emitter with a gradient interface
  title_type: original
  lang: en

## Description

- description: The development of spintronic emitters of broadband terahertz (THz)
    pulses relies on designing heterostructures in which the processes of laser-driven
    spin current generation and subsequent spin-to-charge current conversion are the
    most efficient. The interface between the ferromagnetic and nonmagnetic layers
    in an emitter is a critical element. In this study, we experimentally examined
    single-cycle THz pulse generation from a laser-pulse-excited Pt/Co emitter with
    a 1.2-nm-thick composition-gradient interface between the Pt and Co and compared
    it with the emission from a conventional Pt/Co structure with an abrupt interface.
    We found that the gradient interface improved the efficiency of the optics-to-THz
    conversion by a factor of two in a wide range of optical fluences up to 3 mJ⋅cm−2.
    This enhancement was caused by a pronounced increase in the transmittance of the
    laser-driven spin-polarized current through the gradient interface compared with
    the abrupt interface. Moreover, it was evident that such transmission deteriorated
    with the laser fluence owing to the spin accumulation effect.
  description_type: abstract
  lang: en

## Creator

- name: Leonid A. Shelukhin
  role: author
  organization: a Ioffe Institute, St. Petersburg, Russia
- name: Anna V. Kuzikova
  role: author
  organization: a Ioffe Institute, St. Petersburg, Russia
- name: Andrey V. Teleginb
  role: author
  organization: Ural Branch of Russian Academy of Science
  department: b M. N. Mikheev Institute of Metal Physics
- name: Vladimir D. Bessonov
  role: author
  organization: Ural Branch of Russian Academy of Science
  department: b M. N. Mikheev Institute of Metal Physics
- name: Alexey V. Ognev
  role: author
  organization: Sakhalin State University
  department: c Institute of High Technologies and Advanced Materials, Far Eastern
    Federal University
- name: Alexander S. Samardak
  role: author
  organization: Sakhalin State University,
  department: c Institute of High Technologies and Advanced Materials, Far Eastern
    Federal University
- name: Junho Park
  role: author
  organization: Korea University
  department: e Department of Materials Science and Engineering
- name: Young Keun Kim
  role: author
  organization: Korea University
  department: e Department of Materials Science and Engineering
- name: Alexandra M. Kalashnikova
  role: author
  organization: a Ioffe Institute, St. Petersburg, Russia

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: inverse spin Hall effect
  schema: not_defined
- subject: Pt/Co interface
  schema: not_defined
- subject: spintronic emitte
  schema: not_defined
- subject: single-cycle terahertz pulse
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '26'
  issue: '1'
  article_number: '2448417 '

## Conference



## Related item



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## Instrument



## Instrument operator



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## 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: a696a70e-19ee-4bd5-9308-fc1fb2f3f228
  filename: Enhanced laser-induced single-cycle terahertz generation in a spintronic
    emitter with a gradient interface.pdf
  content_type: application/pdf
  size: 3250041
  md5: fcb73f2148e7ef00f97d336b25e1ab80

## Thumbnail

fileset_id: a696a70e-19ee-4bd5-9308-fc1fb2f3f228
filename: Enhanced laser-induced single-cycle terahertz generation in a spintronic
  emitter with a gradient interface.pdf