# Enhancement of the thermoelectric figure of merit in the dirac semimetal Cd3As2 by band-structure and -filling control

https://mdr.nims.go.jp/datasets/6ff51f29-de60-4fbe-8126-70d36ffd5b29

## File

- [Enhancement of the thermoelectric figure of merit in the dirac semimetal Cd3As2 by band-structure and -filling control.pdf](https://mdr.nims.go.jp/filesets/2507679d-9787-4f1d-b260-ae48605fa5f3/download) ([Detail](https://mdr.nims.go.jp/filesets/2507679d-9787-4f1d-b260-ae48605fa5f3.md))

## Id

6ff51f29-de60-4fbe-8126-70d36ffd5b29

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-19T04:59:27.263717Z

## Updated at

2025-07-16T07:17:03.385923Z

## Published at

2025-03-26T08:26:34.675186Z

## Doi

https://doi.org/10.48505/nims.5374

## First published url

https://doi.org/10.1080/14686996.2024.2412971

## Date published

2024-12-31

## Recorded date published

2024-12-31

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Enhancement of the thermoelectric figure of merit in the dirac semimetal
    Cd3As2 by band-structure and -filling control
  title_type: original
  lang: en

## Description

- description: "Topological materials attract a considerable research interest because
    of their\r\ncharacteristic band structure giving rise to various new phenomena
    in quantum physics.\r\nBeside this, they are tempting from a functional materials
    point of view: Topological\r\nmaterials bear potential for an enhanced thermoelectric
    efficiency because they possess\r\nthe required ingredients, such as intermediate
    carrier concentrations, large mobilities,\r\nheavy elements etc. Against this
    background, this work reports an enhanced\r\nthermoelectric performance of the
    topological Dirac semimetal Cd 3 As 2 upon alloying\r\nthe trivial semiconductor
    Zn 3 As 2 . This allows to gain fine-tuned control over both the\r\nband filling
    and the band topology in Cd 3−x Zn x As 2 . As a result, the thermoelectric\r\nfigure
    of merit exceeds 0.5 around x = 0.6 and x =1.2 at elevated temperatures. The\r\nformer
    is due to an enhancement of the power factor, while the latter is a consequence
    of\r\na strong suppression of the thermal conductivity. In addition, in terms
    of first-principle\r\nband structure calculations, the thermopower in this system
    is theoretically evaluated,\r\nwhich suggests that the topological aspects of
    the band structure change when traversing\r\nx =1.2 ."
  description_type: abstract
  lang: en

## Creator

- name: Markus Kriener
  role: author
  organization: RIKEN Center for Emergent Matter Science (CEMS)
  department: Global Innovative Centre for Advanced Nanomaterials, College of Engineering,
    Science and Environment (CESE), School of Engineering
- name: Takashi Koretsune
  role: author
  organization: Tohoku University
  department: Department of Physics
- name: Ryotaro Arita
  role: author
  organization: Research Center for Advanced Science and Technology, University of
    Tokyo
  department: RIKEN Center for Emergent Matter Science (CEMS)
- name: Yoshinori Tokura
  role: author
  organization: RIKEN Center for Emergent Matter Science (CEMS)
  department: Department of Applied Physics and Quantum-Phase Electronics Center (QPEC),
    University of Tokyo
- name: Yasujiro Taguchi
  role: author
  organization: RIKEN Center for Emergent Matter Science (CEMS)

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: thermoelectric materials
  schema: not_defined
- subject: figure of merit
  schema: not_defined
- subject: band structure engineering
  schema: not_defined
- subject: band filling
  schema: not_defined
- subject: irac semimetal
  schema: not_defined
- subject: Cd 3 As 2
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '25'
  issue: '1'
  article_number: '2412971'

## Conference



## Related item



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## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



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## Computational method



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## Fileset

- id: 2507679d-9787-4f1d-b260-ae48605fa5f3
  filename: Enhancement of the thermoelectric figure of merit in the dirac semimetal
    Cd3As2 by band-structure and -filling control.pdf
  content_type: application/pdf
  size: 2437740
  md5: bdfbe2c8568cfac03e39876ca7f88f5b

## Thumbnail

fileset_id: 2507679d-9787-4f1d-b260-ae48605fa5f3
filename: Enhancement of the thermoelectric figure of merit in the dirac semimetal
  Cd3As2 by band-structure and -filling control.pdf