# Scattering-tuned metal thermoelectrics, a new paradigm

https://mdr.nims.go.jp/datasets/c05c9d91-e1b1-4587-b23a-cbe848995245

## File

- [Iwasaki_2026_Appl._Phys._Express_19_070104.pdf](https://mdr.nims.go.jp/filesets/30d47575-069b-4873-b703-2db08d5a6d06/download) ([Detail](https://mdr.nims.go.jp/filesets/30d47575-069b-4873-b703-2db08d5a6d06.md))

## Id

c05c9d91-e1b1-4587-b23a-cbe848995245

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-08-03T00:08:19.772213Z

## Updated at

2026-08-03T00:54:18.405166Z

## Published at

2026-08-03T03:31:04.802396Z

## Doi



## First published url

https://doi.org/10.35848/1882-0786/ae84a0

## Date published

2026-07-01

## Recorded date published

2026-7-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Scattering-tuned metal thermoelectrics, a new paradigm
  title_type: original
  lang: en

## Description

- description: "In contrast to conventional semiconductor materials, this review outlines
    a new strategy for metals to be high-performance thermoelectric materials. We
    have proposed “intrinsic energy filtering” as a strategy to overcome the inherently
    low Seebeck coefficients in metals. This strategy involves engineering electronic
    structures where a dispersive conduction band and a localized flat band coexist
    near the Fermi level, creating strong energy dependence in the carrier relaxation
    time, thereby generating a large Seebeck coefficient S.\r\nEffectiveness has manifested
    in distinct material systems; Ni–Au alloy, where disorder-mediated s–d interband
    scattering achieves exceptionally high power factors ~34 mWm-1K-2. Ni3Ge exhibits
    a relatively large S~-80 μVK-1 through interband scattering. Strategy was extended
    to the Kagome metal Ni3In, with topological flat band, revealing that Zener tunneling
    can suppress S, and thereby impetus to circumvent this.\r\nThese developments
    point to a new horizon for development of next-generation thermoelectric materials,
    unlocked by precise control of scattering mechanisms.\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Yutaka Iwasaki
  role: author
  orcid: https://orcid.org/0000-0002-7317-4939
  organization: National Institute for Materials Science
- name: Fabian Garmroudi
  role: author
- name: Naohito Tsujii
  role: author
  orcid: https://orcid.org/0000-0002-6181-5911
  organization: National Institute for Materials Science
- name: Ernst Bauer
  role: author
- name: Andrej Pustogow
  role: author
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: thermoelectric materials
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-07-20

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Applied Physics Express
  issn: '18820786'
  volume: '19'
  issue: '7'
  article_number: '070104'

## Conference



## Related item



## Funding

- identifier: JPMJMI19A1
  funder_name: JST-Mirai Program

## 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: 30d47575-069b-4873-b703-2db08d5a6d06
  filename: Iwasaki_2026_Appl._Phys._Express_19_070104.pdf
  content_type: application/pdf
  size: 1642672
  md5: fcc73454d54eaf1dbb921e5a5a1cc7b8

## Thumbnail

fileset_id: 30d47575-069b-4873-b703-2db08d5a6d06
filename: Iwasaki_2026_Appl._Phys._Express_19_070104.pdf