# Mapping Delocalization of Impurity Bands across Archetypal Mott-Anderson Transition

https://mdr.nims.go.jp/datasets/e8e1d6d6-fd25-47a2-810f-7ea9f429da56

## File

- [Physical Review Letters----Mapping delocalization of impurity bands across archetypal Mott-Anderson transition.pdf](https://mdr.nims.go.jp/filesets/39af47c0-2622-4106-aae2-4e7071927d40/download) ([Detail](https://mdr.nims.go.jp/filesets/39af47c0-2622-4106-aae2-4e7071927d40.md))

## Id

e8e1d6d6-fd25-47a2-810f-7ea9f429da56

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-08T17:18:45.647872Z

## Updated at

2025-11-11T07:30:33.844567Z

## Published at

2025-11-11T07:24:14.859588Z

## Doi



## First published url

https://doi.org/10.1103/fz9j-bj87

## Date published

2025-08-06

## Recorded date published

2025-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Mapping Delocalization of Impurity Bands across Archetypal Mott-Anderson
    Transition
  title_type: original
  lang: en

## Description

- description: Tailoring charge transport in solids on demand is the overarching goal
    of condensed-matter research as it is crucial for electronic applications. Yet,
    often the proper tuning knob is missing and extrinsic factors such as impurities
    and disorder impede coherent conduction. Here we control the very buildup of an
    electronic band from impurity states within the pseudogap of ternary Fe2–xV1+x
    Al Heusler compounds via reducing the Fe content. Our density functional theory
    calculations combined with specific heat and electrical resistivity experiments
    reveal that, initially, these states are Anderson-localized at low V concentrations
    0 < x < 0.1. As x increases, we monitor the formation of mobility edges upon the
    archetypal Mott-Anderson transition and map the increasing bandwidth of conducting
    states by thermoelectric measurements. Ultimately, delocalization of charge carriers
    in fully disordered V3Al results in a resistivity exactly at the Mott-Ioffe-Regel
    limit that is perfectly temperature-independent up to 700 K – more constant than
    constantan.
  description_type: abstract
  lang: und

## Creator

- name: M. Parzer
  role: author
- name: F. Garmroudi
  role: author
- name: A. Riss
  role: author
- name: T. Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: A. Pustogow
  role: author
- name: E. Bauer
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Letters
  issn: '10797114'
  volume: '135'
  issue: '6'
  start_page: 66302
  end_page: 66302
  article_number: '066302'

## Conference



## Related item



## Funding

- funder_name: Japan Science and Technology Agency
- identifier: JPMJMI19A1
  funder_name: JST-Mirai Program
- funder_name: Technische Universität Wien
- funder_name: Laboratory Directed Research and Development

## 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: 39af47c0-2622-4106-aae2-4e7071927d40
  filename: Physical Review Letters----Mapping delocalization of impurity bands across
    archetypal Mott-Anderson transition.pdf
  content_type: application/pdf
  size: 1079569
  md5: 3a55252bd7bb35536ced676916d72baa

## Thumbnail

fileset_id: 39af47c0-2622-4106-aae2-4e7071927d40
filename: Physical Review Letters----Mapping delocalization of impurity bands across
  archetypal Mott-Anderson transition.pdf