# Depth-dependent electronic states of                    <math>                      <mrow>                        <msub>                          <mi>Fe</mi>                          <mn>3</mn>                        </msub>                        <msub>                          <mi>O</mi>                          <mn>4</mn>                        </msub>                      </mrow>                    </math>                    across the Verwey transition studied by hard x-ray photoemission spectroscopy

https://mdr.nims.go.jp/datasets/2b32d64c-99fd-4541-a1f6-56b93667b28c

## File

- [Fe3O4_20261011_final.pdf](https://mdr.nims.go.jp/filesets/91c7bdd9-e388-48d7-baae-69f44a2114d1/download) ([Detail](https://mdr.nims.go.jp/filesets/91c7bdd9-e388-48d7-baae-69f44a2114d1.md))

## Id

2b32d64c-99fd-4541-a1f6-56b93667b28c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-11-04T05:14:17.112564Z

## Updated at

2026-11-04T05:59:07.570041Z

## Published at

2026-11-04T07:34:48.613638Z

## Doi

https://doi.org/10.48505/nims.8699

## First published url

https://doi.org/10.1103/lyp6-ctpz

## Date published

2026-11-02

## Recorded date published

2026-11

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: |-
    Depth-dependent electronic states of
                        <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
                          <mml:mrow>
                            <mml:msub>
                              <mml:mi>Fe</mml:mi>
                              <mml:mn>3</mml:mn>
                            </mml:msub>
                            <mml:msub>
                              <mml:mi mathvariant="normal">O</mml:mi>
                              <mml:mn>4</mml:mn>
                            </mml:msub>
                          </mml:mrow>
                        </mml:math>
                        across the Verwey transition studied by hard x-ray photoemission spectroscopy
  title_type: original
  lang: en

## Description

- description: "Depth-dependent electronic states of a prototypical strongly correlated
    Fe<sub>3</sub>O<sub>4</sub> thin film across the Verwey transition temperature
    (T<sub>V</sub>&sim;125K) were investigated by hard x-ray photoemission spectroscopy
    (HAXPES) combined with x-ray total reflection (TR). We found that the Fe 2p HAXPES
    spectral shapes strongly depend on the effective inelastic mean-free-path (&lambda;<sub>eff</sub>)
    regardless of temperature (T). Particularly, the shoulder structure located at
    the lower binding energy side of the Fe 2p<sub>3/2</sub> main peak becomes more
    pronounced with increasing &lambda;<sub>eff</sub> (i.e., increasing bulk sensitivity),
    indicating a significant difference in the electronic structures between the surface
    and deeper regions of the film. This trend coincides with the increase of the
    density of states near the Fermi level (E<sub>F</sub>) for larger &lambda;<sub>eff</sub>,
    suggesting the contribution of nonlocal screening effects. While the valence band
    spectra show a clear metal-to-insulator transition across T<sub>V</sub>, the Fe
    2p core-level HAXPES and the magnetic circular dichroism profiles for large &lambda;<sub>eff</sub>
    are almost independent on T. This behavior suggests that the average valence of
    the B-site Fe species is maintained at 2.5+ across T<sub>V</sub>.\r\n\r\n"
  description_type: abstract
  lang: und

## Creator

- name: Shigenori Ueda
  role: author
  orcid: https://orcid.org/0000-0001-9425-0614
- name: Azusa N. Hattori
  role: author
  orcid: https://orcid.org/0000-0002-5770-6026
- name: Hidekazu Tanaka
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: HAXPES
  schema: not_defined
- subject: Fe3O4 thin film
  schema: not_defined
- subject: depth dependence
  schema: not_defined
- subject: electronic states
  schema: not_defined
- subject: surface region
  schema: not_defined
- subject: deeper region
  schema: not_defined

## Rights

- description: "©2026 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Physical Review B
  issn: '24699950'
  volume: '114'
  issue: '28'
  article_number: '285103'

## Conference



## Related item



## Funding

- identifier: JPMXP0112101001
  funder_name: Tokodai Institute for Element Strategy
- identifier: JPMXP1122683430
  funder_name: Ministry of Education, Culture, Sports, Science and Technology

## 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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## Fileset

- id: 91c7bdd9-e388-48d7-baae-69f44a2114d1
  filename: Fe3O4_20261011_final.pdf
  content_type: application/pdf
  size: 1452466
  md5: e15bebab6e6df4367261ae47b8445fc9

## Thumbnail

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filename: Fe3O4_20261011_final.pdf